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Asymmetric Catalysis by Architectural and Functional Molecular Engineering: Practical Chemo- and Stereoselective Hydrogenation of Ketones
Article first published online: 4 JAN 2001
DOI: 10.1002/1521-3773(20010105)40:1<40::AID-ANIE40>3.0.CO;2-5
Copyright © 2001 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany
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Noyori, R. and Ohkuma, T. (2001), Asymmetric Catalysis by Architectural and Functional Molecular Engineering: Practical Chemo- and Stereoselective Hydrogenation of Ketones. Angew. Chem. Int. Ed., 40: 40–73. doi: 10.1002/1521-3773(20010105)40:1<40::AID-ANIE40>3.0.CO;2-5
Publication History
- Issue published online: 4 JAN 2001
- Article first published online: 4 JAN 2001
- Manuscript Received: 10 JAN 2000
- 1
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- 3
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- 6b
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- 6i
- 7
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- 7c
- 7d
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- 7f, , , , Homogeneous Hydrogenation, Kluwer, Dordrecht, 1994;
- 7gI. Ojima, M. Eguchi, M. Tzamarioudaki in ref [1j], chap 2.
- 8
- 8a, Catalytic Hydrogenation in Organic Syntheses, Academic Press, New York, 1979;
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- 8din Comprehensive Organic Synthesis, Vol. 8 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 417–442.
- 9
- 9a
- 9b
- 9c
- 9d
- 9e
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- 9g
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- 10csee ref [2], chap 2.
- 11
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- 12a
- 12b
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- 12din Asymmetric Synthesis, Vol. 5 (Ed.: J. D. Morrison), Academic Press, Orlando, 1985, chap 3;
- 12e
- 12fD. Arntz, A. Schäfer in ref [1f], pp. 161–189;
- 12gin Methoden Org. Chem. (Houben-Weyl), 4th ed., Vol. E21d, 1995, pp. 3945–3966;
- 12h, Stereoselective Synthesis: A Practical Approach, 2nd ed., VCH, Weinheim, 1995, chap 2;
- 12iin Reductions in Organic Synthesis: Recent Advances and Practical Applications (Ed.: A. F. Abdel-Magid), American Chemical Society, Washington, 1996, chap 2 (ACS Symp. Ser. 1996, 641, 31–51);
- 12jJ. M. Brown in ref [3f], Vol. 1, pp. 121–182;
- 12kR. L. Halterman in ref [3f], Vol. 1, pp. 183–195.
- 13Heterogeneous asymmetric hydrogenation of ketones see:
- 13a
- 13bin Asymmetric Synthesis, Vol. 5 (Ed.: J. D. Morrison), Academic Press, Orlando, 1985, chap 10;
- 13c
- 13d, in Handbook of Heterogeneous Catalysis, Vol. 5 (Eds.: G. Ertl, H. Knözinger, J. Weitkamp), Wiley-VCH, Weinheim, 1997, pp. 2422–2436.
- 14
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- 14bMethoden Org. Chem. (Houben-Weyl), 4th ed., Vol. E21a–f, 1995, 1996.
- 15Current aspects of asymmetric synthesis:
- 15aProblems and Wonders of Chiral Molecules (Ed.: M. Simonyi), Académiai Kiadó, Budapest, 1990;
- 15bChirality in Industry: The Commercial Manufacture and Applications of Optically Active Compounds (Eds.: A. N. Collins, G. N. Sheldrake, J. Crosby), Wiley, Chichester, 1992;
- 15cChirality in Industry II: Developments in the Commercial Manufacture and Applications of Optically Active Compounds (Eds.: A. N. Collins, G. N. Sheldrake, J. Crosby), Wiley, Chichester, 1997;
- 15dAsymmetric Synthesis (Eds.: R. A. Aitken, S. N. Kilényi), Blackie Academic & Professional, London, 1992;
- 15e, Asymmetric Synthesis of Natural Products, Wiley, Chichester, 1993;
- 15fStereocontrolled Organic Synthesis (Ed.: B. M. Trost), Blackwell Scientific Publications, Oxford, 1994;
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- 15lCurrent Trends in Organic Synthesis (Eds.: C. Scolastico, F. Nicotra), Kluwer Academic/Plenum Publishers, New York, 1998;
- 15mEnantiocontrolled Synthesis of Fluoro-Organic Compounds: Stereochemical Challenges and Biomedical Targets (Ed.: V. A. Soloshonok), Wiley, Chichester, 1999.
- 16Abbreviations: BINAP=2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl. TolBINAP=2,2′-Bis(di-4-tolylphosphino)-1,1′-binaphthyl. XylBINAP=2,2′-Bis(di-3,5-xylylphosphino)-1,1′-binaphthyl. CHIRAPHOS=2,3-Bis(diphenylphosphino)butane. DIOP=2,3-O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane. DPEN=1,2-Diphenylethylenediamine. DAIBEN=1,1-Di-4-anisyl-2-isobutyl-1,2-ethylenediamine. DAIPEN=1,1-Di-4-anisyl-2-isopropyl-1,2-ethylenediamine. DAMEN=1,1-Di-4-anisyl-2-methyl-1,2-ethylenediamine.
- 17
- 18
- 19
- 20
- 20a, , , , , , , , , , , J. Am. Chem. Soc. 1989, 111, 9134–9135;
- 20b
- 20c
- 21Computational analysis:
- 21a
- 21b
- 22, , , , , , , , , , , J. Org. Chem. 1994, 59, 3064–3076.
- 23
- 23a
- 23b, , , , , , , , , Science 1986, 231, 1108–1117.
- 24
- 24a
- 24b
- 24c, , , , , , , J. Chem. Soc. Chem. Commun. 1985, 922–924;
- 24d
- 24e
- 24f, in Catalysis of Organic Reactions (Eds.: M. G. Scaros, M. L. Prunier), Marcel Dekker, New York, 1995, pp. 157–166;
- 24g
- 25For the importance of an acid see:
- 25a
- 25b
- 25c, , , , , , Tetrahedron Lett. 1995, 36, 4801–4804;
- 25d
- 26, , , , Tetrahedron 1999, 55, 8769–8785; see also ref [17, 20].
- 27
- 28Unpubished results from our laboratory.
- 29
- 30
- 30a
- 30b
- 31
- 32
- 32a
- 32b
- 33
- 33a
- 33b
- 34
- 35
- 36
- 37Review: , in Comprehensive Organometallic Chemistry: The Synthesis, Reactions and Structures of Organometallic Compounds, Vol. 4 (Eds.: G. Wilkinson, F. G. A. Stone, E. W. Abel), Pergamon, Oxford, 1982, pp. 931–965.
- 38For an excellent review over catalysis with ruthenium complexes see: , , , Chem. Rev. 1998, 98, 2599–2660.
- 39
- 40
- 40a
- 40b
- 41
- 42
- 43, , , , , Angew. Chem. 1998, 110, 1203–1207;Angew. Chem. Int. Ed. 1998, 37, 1100–1103.Direct Link:
- 44
- 45
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- 47
- 48For a comprehensive review see: , , Angew. Chem. 1998, 110, 2092–2118;Angew. Chem. Int. Ed. 1998, 37, 1986–2012.Direct Link:
- 49, , , , Angew. Chem. 1995, 107, 2309–2311;Angew. Chem. Int. Ed. Engl. 1995, 34, 2145–2147.Direct Link:
- 50a
- 50b
- 50c, in Encyclopedia of Reagents for Organic Synthesis, Vol. 4 (Ed.: L. A. Paquette), Wiley, Chichester, 1995, pp. 2247–2250;
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- 50eS. Itsuno in ref [3f], Vol. 1, pp. 289–315.
- 51For reviews on stoichiometric asymmetric hydroboration see:
- 51a
- 51bM. M. Midland, L. A. Morell in ref [14b], Vol. E21d, pp. 4082–4098;
- 51c, in Reductions in Organic Synthesis: Recent Advances and Practical Applications (Ed.: A. F. Abdel-Magid), American Chemical Society, Washington, 1996, chap 5 (ACS Symp. Ser. 1996, 641, 84–97).
- 52, , , , , , , J. Chem. Soc. Perkin Trans. 1 1985, 2039–2044.
- 53
- 54
- 54aI. Ojima, K. Hirai in ref [14a], Vol. 5, chap 4;
- 54bH. Brunner, H. Nishiyama, K. Itoh in ref [3c], chap 6;
- 54cH. Brunner in ref [14b], Vol. E21d, pp. 4074–4081;
- 54dH. Brunner in ref [1m], Vol. 2, pp. 131–140;
- 54eH. Nishiyama in ref [3f], Vol. 1, pp. 267–287.
- 55
- 55a
- 55b
- 55c, , , Helv. Chim. Acta 1993, 76, 2654–2665;
- 55d, , , Angew. Chem. 1994, 106, 92–93;Angew. Chem. Int. Ed. Engl. 1994, 33, 111–113;Direct Link:
- 55e
- 55f
- 55g, , Helv. Chim. Acta 1999, 82, 1096–1110;Direct Link:
- 55h
- 56
- 56a, in Asymmetric Organic Reactions, Prentice-Hall, New Jersey, 1971, chap 5;
- 56b
- 56c
- 56d
- 56eK. Krohn in ref [14b], Vol. E21d, pp. 4099–4142;
- 56fS. Gladiali, G. Mestroni in ref [1m], Vol. 2, pp. 97–119;
- 56g
- 57a, , , , Helv. Chim. Acta 1991, 74, 232–239;
- 57b
- 57c
- 58
- 58a
- 58b
- 59
- 59aReduction: Techniques and Applications in Organic Synthesis (Ed.: R. L. Augustine), Marcel Dekker, New York, 1968;
- 59bStereoselective Reductions (Benchmark Papers in Organic Chemistry, Vol. 6) (Eds.: M. P. Doyle, C. T. West), Dowden, Hutchinson & Ross, Stroudsburg, Pennsylvania, 1976;
- 59c, Reductions in Organic Chemistry, 2nd ed., American Chemical Society, Washington, DC, 1996;
- 59dReductions in Organic Synthesis: Recent Advances and Practical Applications (Ed.: A. F. Abdel-Magid), American Chemical Society, Washington, 1996 (ACS Symp. Ser. 1996, 641);
- 59eJ. Seyden-Penne, Reductions by the Alumino- and Borohydrides in Organic Synthesis, 2nd ed., Wiley-VCH, New York, 1997
- 60Reviews:
- 60aE. R. Grandbois, S. I. Howard, J. D. Morrison in ref [14a], Vol. 2, chap 3;
- 60bY. Inouye, J. Oda, N. Baba in ref [14a], Vol. 2, chap 4;
- 60c
- 60d, in Comprehensive Organic Synthesis, Vol. 8 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 159–182;
- 60eM. M. Midland, L. A. Morell in ref [14b], Vol. E21d, pp. 4049–4066;
- 60fsee ref [15h], chap 3;
- 60gsee ref [15i], chap 6;
- 60hsee ref [15k], chap 7;
- 60iA. K. Beck, R. Dahinden, F. N. M. Kühnle in ref [59d], chap 3;
- 60jsee ref [59e], pp. 55–65.
- 61
- 61a
- 61b, , , Angew. Chem. 1990, 102, 273–290;Angew. Chem. Int. Ed. Engl. 1990, 29, 256–272;Direct Link:
- 61c, in Comprehensive Organic Synthesis, Vol. 1 (Eds.: B. M. Trost, I. Fleming, S. L. Schreiber), Pergamon, Oxford, 1991, pp. 283–324.
- 62
- 62aSelectivities in Lewis Acid Promoted Reactions (Ed.: D. Schinzer), Kluwer, Dordrecht, 1988;
- 62b, , Lewis Acids and Selectivity in Organic Synthesis, CRC Press, Boca Raton, FL, USA, 1996;
- 62cLewis Acid Reagents: A Practical Approach (Ed.: H. Yamamoto), Oxford University Press, Oxford, 1999.
- 63
- 63a
- 63b, , Angew. Chem. 1997, 109, 566–602;Angew. Chem. Int. Ed. Engl. 1997, 36, 550–583.Direct Link:Direct Link:
- 64For example:
- 64asee ref [1d], chap 5;
- 64bsee ref [1i], chap 6.
- 65
- 65a
- 65b
- 66a
- 66b
- 66c
- 66d, , Angew. Chem. 1996, 108, 2489–2492;Angew. Chem. Int. Ed. Engl. 1996, 35, 2339–2342.Direct Link:
- 67
- 68M. Tokunaga, Dissertation, Nagoya University, 1995.
- 69
- 69a, Stereochemistry of Heterogeneous Metal Catalysis, Wiley, Chichester, 1985;
- 69bHandbook of Heterogeneous Catalysis, Vol. 1–5 (Eds.: G. Ertl, H. Knözinger, J. Weitkamp), VCH, Weinheim, 1997;
- 69c, , Principles and Practice of Heterogeneous Catalysis, VCH, Weinheim, 1997;
- 69d“Heterogeneous Catalysis and Fine Chemicals IV”: Stud. Surf. Sci. Catal. 1997, 108;
- 69e“Science and Technology in Catalysis 1998”: Stud. Surf. Sci. Catal. 1999, 121.
- 70
- 70aH. B. Kagan in ref [14a], Vol. 5, chap 1;
- 70b
- 70c
- 70d
- 70e, , Chem. Eur. J. 1998, 4, 950–968;
- 70f
- 70g, , , Angew. Chem. 1998, 110, 2724–2772;Angew. Chem. Int. Ed. 1998, 37, 2580–2627.Direct Link:
- 71Acceleration of Ru-catalyzed CO2 hydrogenation with a small amount of H2O or CH3OH was explained by this mechanism. See: , , , , J. Am. Chem. Soc. 1996, 118, 344–355.
- 72Certain chiral Lewis acid/Brønsted acid combined systems can be used for asymmetric protonation: , , , , J. Am. Chem. Soc. 1996, 118, 12 854–12 855.
- 73Examples:
- 73a
- 73b
- 73cPlatinum and Other Metal Coordination Compounds in Cancer Chemotherapy 2 (Eds.: H. M. Pinto, J. H. Schornagel), Plenum, New York, 1996;
- 73dCisplatin: Chemistry and Biochemistry of a Leading Anticancer Drug (Ed.: B. Lippert), Wiley-VCH, Weinheim, 1999;
- 73e
- 73f
- 73g
- 73h, , Angew. Chem. 1999, 111, 1610–1630;Angew. Chem. Int. Ed. 1999, 38, 1512–1531.Direct Link:
- 74
- 75
- 76For the concept of ligand-accelerated catalysis see: , , , Angew. Chem. 1995, 107, 1159–1171;Angew. Chem. Int. Ed. Engl. 1995, 34, 1059–1070.Direct Link:
- 77see for example:
- 77a
- 77b
- 78, , , in Perspectives in Coordination Chemistry (Eds.: A. F. Williams, C. Floriani, A. E. Merbach), VHCA, Basel, 1992, pp. 463–486, and refs therein.
- 79, , , , , , , , , Angew. Chem. 1998, 110, 1792–1796;Angew. Chem. Int. Ed. 1998, 37, 1703–1707.Direct Link:
- 80
- 81Preparation of trans-[RuCl2{P(C6H5)3}2{NH2(CH2)2NH2}]: [RuCl2{P(C6H5)3}3] (1.11 g, 1.16 mmol) was placed in a 50-mL Schlenk flask in which the air had been replaced with argon. CH2Cl2 (10 mL) and NH2(CH2)2NH2 (0.15 mL, 2.2 mmol) were then added. The mixture was degassed with three cycles of vacuum and argon replacement and was stirred at 25 °C for 3 h. After removal of turbidity by filtration, the filtrate was concentrated to ca. 5 mL, hexane (20 mL) was then added and a light brown powder was obtained. The supernatant solution was removed and the resulting solid was dried under reduced pressure (1 Torr) to give analytically pure trans-[RuCl2{P(C6H5)3}2{NH2(CH2)2NH2}] (0.55 g, 63 % yield). Decomposition point (DP): 176 °C; IR (KBr):
[cm−1]: 3220, 3320 (H-N); 1H NMR (400 MHz, C6D6, 25 °C, TMS): δ=2.1 (m, 4 H; 2CH2), 2.8 (m, 4 H; 2NH2), 6.8–8.0 (m, 30 H; aromatics); 31P NMR (81 MHz, C6D6, 10 % H3PO4 as external standard) δ=45.5 (s). - 82In order to obtain high catalytic activity, particularly in the reaction of a high S/C value, the substrate should be washed with a base solution prior to use.
- 83
- 84
- 84a
- 84b, FR-B 2 014 487, 1970 [Chem. Abstr. 1971, 74, 53848s];
- 84c, , , , DE-B 2 461 406, 1976 [Chem. Abstr. 1976, 85, 160095t];
- 84d, , , , , , , , , , Experientia 1977, 33, 1657–1659;
- 84e, , , , , Chem. Pharm. Bull. 1985, 33, 3787–3797.
- 85
- 85a
- 85b, , , J. Chem. Soc. Perkin Trans. 2 1975, 551–553; see also: , , , Tetrahedron 1957, 1, 214–220.
- 86Reviews:
- 86a
- 86bin Comprehensive Organic Synthesis, Vol. 8 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 1–24;
- 86csee ref [59c], chap 13;
- 86dH. C. Brown, P. V. Ramachandran in ref [59d], chap 1;
- 86esee ref [59e], chap 3.
- 87Reviews:
- 87a
- 87b, in Comprehensive Organic Synthesis, Vol. 8 (Eds.: B. M. Trost, I. Fleming), Pergamon, Oxford, 1991, pp. 523–578.
- 88
- 88a
- 88b
- 89Other examples with homogeneous catalysts:
- 89a
- 89b
- 89c
- 90With heterogeneous catalysts:
- 90a
- 90b
- 90c
- 90d
- 90e
- 90f, , , , , , , , , J. Am. Chem. Soc. 1994, 116, 7935–7936.
- 91With polymer-bound rhodium catalysts:
- 91a
- 91b
- 92
- 93
- 94, in Catalysis of Organic Reactions (Eds.: M. G. Scaros, M. L. Prunier), Marcel Dekker, New York, 1995, pp. 235–247.
- 95
- 96Heterogeneous hydrogenation:
- 96a
- 96b
- 97
- 98
- 991-Phenyl-3-butyn-1-one, an α,β-acetylenic ketone, could not be hydrogenated under such conditions.
- 100Recent reviews: A. P. Davis in ref. [14b], Vol. E21d, pp. 3988–4048. Reduction with dissolving metals: A. M. El-Khawaga, H. M. R. Hoffmann in ref. [14b], Vol. E21d, pp. 3967–3987; reduction with metal alkoxides: K. Krohn in ref. [14b], Vol. E21d, pp. 4099–4142.
- 101Highly diastereoselective Selectride reduction:
- 101a
- 101b
- 102
- 103
- 103a, , , Org. Synth. Coll. Vol. 1973, 5, 175–178;
- 103b
- 103c
- 103dG. Godjoian, G. B. Fisher, C. T. Goralsky, B. Singaram in ref [59d], chap 10.
- 104
- 105Hydrogenation of 4-tert-butylcyclohexanone with a [RuCl2{P(C6H5)3}3]/NH2(CH2)2NH2/KOH catalyst system: Half molar 2-propanol solutions of NH2(CH2)2NH2 (39 mL, 0.0195 mmol) and KOH (78 mL, 0.038 mmol) were added to 2-propanol (5 mL) in a 20-mL Schlenk flask. The solution was degassed by three freeze-thaw cycles. Solid [RuCl2{P(C6H5)3}3] (18.7 mg, 0.0195 mmol) was added to the diamine/KOH solution under a stream of argon, and the resultant mixture was further degassed by two freeze-thaw cycles, sonicated for 30 min, and used as a catalyst stock solution. 2-Propanol (100 mL) charged into a second 250-mL Schlenk flask by hypodermic syringe and was also degassed. Solid 4-tert-butylcyclohexanone (30.0 g, 194.5 mmol) was placed into a 500-mL glass autoclave equipped with a Teflon-coated magnetic stirring bar, a pressure gauge, and a gas inlet tube attached to a hydrogen source. 2-Propanol and the catalyst solution were subsequently transferred by cannula to the autoclave. Hydrogen was introduced initially into the autoclave at a pressure of 4 atm and was then reduced to 1 atm by carefully releasing the stop valve. After repeating this procedure five times, the vessel was pressurized to 4 atm. The reaction mixture was vigorously stirred at 28 °C for 80 h, during which time the open hydrogen cylinder remained connected. After this time, the yield and cis:trans ratio as determined by GC analysis (TC-WAX (polyethylene glycol) column) were 99.8 % and 98.4:1.6, respectively. After the hydrogen gas was carefully vented, the solvent was removed under reduced pressure. The residue was purified by distillation giving cis-4-tert-butylcyclohexanol (98.3 % pure, 29.2 g, 96 % yield), BP: 112–115 °C (19 Torr). Recrystallization of this product from a water–ethanol mixture gave 99.6 % pure compound (23.4 g, 82 % yield).
- 106
- 106a
- 106b
- 107
- 107a
- 107b
- 108
- 109Examples of other catalytic stereoselective methods. Transfer hydrogenation:
- 109a
- 109b
- 109c
- 109d
- 109e, , J. Org. Chem. 1988, 53, 5405–5415. Hydrostannation:
- 109f
- 110
- 110a, , , , Conformational Analysis, Wiley, New York, 1965;
- 110b, , , Stereochemistry of Organic Compounds, Wiley, New York, 1994;
- 110cConformational Behavior of Six-Membered Rings: Analysis, Dynamics, and Stereoelectronic Effects (Ed.: E. Juaristi), VCH, New York, 1995.
- 111
- 111asee ref [110a], pp. 112–121;
- 111bin Methoden Org. Chem. (Houben-Weyl), 4th ed., Vol. 6/1b, 1984, pp. 339–341;
- 111csee ref [110b], pp. 731–737.
- 112
- 113, , , , , , , JP-A 241195, 1997 [Chem. Abstr. 1997, 127, 292919k].
- 114
- 114a
- 114b
- 115
- 116a, , Tetrahedron Lett. 1972, 155–158;
- 116b
- 116c
- 117
- 117aE. L. Eliel in ref [14a], Vol. 2, chap 5;
- 117bin Introduction to Stereochemistry and Conformational Analysis, Wiley, New York, 1991, chap 11;
- 117c
- 118Multiple stereodifferentiation: , , , , Angew. Chem. 1985, 97, 1–31;Angew. Chem. Int. Ed. Engl. 1985, 24, 1–30.Direct Link:
- 119
- 119a
- 119b
- 120
- 121
- 122Preparation of trans-[RuCl2{(R)-binap}{(R,R)-dpen}]: [{RuCl2(benzene)}2] (129 mg, 0.258 mmol) and (R)-BINAP (341 mg, 0.55 mmol) were placed in a 50-mL Schlenk flask. After the air in the flask was replaced with argon, DMF (9 mL) was added to the flask, the mixture was degassed by three cycles of vacuum and argon replacement and then heated at 100 °C for 10 min while stirred giving a reddish brown solution. After the solution was cooled to 25 °C, (R,R)-DPEN (117 mg, 0.55 mmol) was added and the mixture was stirred for 3 h. DMF was removed under reduced pressure (1 Torr) at 25 °C and then at 50 °C. The residue was resolved in CH2Cl2 (10 mL) and turbidity was removed by filtration. The filtrate was concentrated to ca. 1 mL, then ether (10 mL) was added and a light brown powder was obtained. The supernatant was removed and the resulting solid was dried under reduced pressure to give analytically pure trans-[RuCl2{(R)-binap}{(R,R)-dpen}] (0.34 g, 66 % yield). DP: 235 °C; IR:
[cm−1]: 3225, 3320 (H-N); 1H NMR (400 MHz): δ=3.3 (m, 2 H, 2 NHH), 3.45 (m, 2 H, 2NHH), 4.55 (m, 2 H, 2NH2CH), 6.3–8.8 (m, 42 H, aromatics); 31P NMR (81 MHz, C6D6, 10 % H3PO4 as external standard) δ=47.4 (s). - 123
- 124
- 125
- 125a
- 125b
- 126For the sake of formal consistency, the Scheme lists results obtained with an (S)-diphosphane/(S)- or (S,S)-diamine combined system. Some experiments were actually performed by using the enantiomeric catalyst.
- 127Asymmetric hydrogenation of acetophenone using trans-[RuCl2{(S)-tolbinap}{(S,S)-dpen}]: 2-Propanol (20 mL) charged into a 100-mL Schlenk flask was degassed by three vacuum–nitrogen replacement cycles. Solid trans-[RuCl2{(S)-tolbinap}{(S,S)-dpen}] (22 mg, 0.020 mmol) was dissolved in the 2-propanol and used as a catalyst stock solution. Acetophenone (601 g, 5.0 mol) and solid (CH3)3COK (5.6 g, 0.050 mol) were placed in a 10-L stainless steel autoclave. Air present in the autoclave was replaced by nitrogen. 2-Propanol (1.5 L) and an aliquot of the catalyst solution (2.0 mL, 0.002 mmol; molar ratio ketone:Ru:base=2 400 000:1:24 000) were added to the autoclave under a stream of nitrogen. The mixture was degassed by three cycles of vacuum–nitrogen replacement. Hydrogen was introduced initially into the autoclave at a pressure of 10 atm and then reduced to 1 atm by carefully releasing the stop valve. After this procedure was repeated three times, the vessel was pressurized to 45 atm. The reaction mixture was vigorously stirred for 48 h at 30 °C to give R-enriched 1-phenylethanol. The yield and ee value determined by GC (Cyclodextrin-β-236M column) were 100 and 80 %, respectively. After the hydrogen gas was carefully vented, the solvent was removed under reduced pressure. The residue was passed through silica gel (300 g) eluting with ethyl acetate, and then distilled to give (R)-1-phenylethanol (577 g, 94 % yield). Bp: 99 °C (15 Torr); [α]
=+38.1° (c=1.02, CH2Cl2). - 128
- 129
- 130
- 130a
- 130b
- 130c
- 131
- 132
- 132asee ref [2], chap 5;
- 132b
- 133S. Kan, unpublished results from our laboratories .
- 134
- 135
- 135a
- 135b
- 136
- 136a
- 136b
- 136c
- 137
- 137a
- 137b
- 137c
- 138
- 139
- 140Asymmetric hydrogenation of o-chlorobenzophenone with trans-[RuCl2{(S)-xylbinap}{(S)-daipen}]: Solid trans-[RuCl2{(S)-xylbinap}{(S)-daipen}] (28.7 mg, 0.0235 mmol) and o-chlorobenzophenone (101.8 g, 0.47 mol) were placed in a 1.5-L stainless steel autoclave equipped with a mechanical stirring blade, a pressure gauge, and a gas inlet tube attached to a hydrogen source. Air in the autoclave was replaced by argon. 2-Propanol (150 mL) and a 1.0 M (CH3)3COK solution in tert-butyl alcohol (4.7 mL, 4.7 mmol) were added to the autoclave under a stream of argon. The mixture was degassed by three cycles of vacuum–argon replacement. The vessel was pressurized with H2 to 8 atm, and then the reaction mixture was vigorously stirred for 55 h at 30 °C. The yield and ee value of (S)-o-chlorobenzhydrol determined by GC (HP-INNOWax (polyethylene glycol) column) and chiral HPLC (CHIRALCEL OD column) analysis were 99 and 97 %, respectively. After the hydrogen gas was carefully vented, the solvent was removed under reduced pressure. Distillation of the residue gave the S alcohol (97.5 g, 95 % yield). Bp: 138–139 °C (0.3 Torr); [α]
=−21.51° (c=1.14, CHCl3). - 141Asymmetric reduction using silicon- and boron-based hydrides:
- 141a, , , J. Chem. Res. Miniprint 1980, 4057–4080;
- 141b
- 141c
- 141d
- 141e
- 141f
- 141g
- 141h
- 141i
- 142
- 142a
- 142b
- 143, , , Angew. Chem. 1999, 111, 1560–1562;Angew. Chem. Int. Ed. 1999, 38, 1457–1460.Direct Link:Direct Link:
- 144
- 145Asymmetric hydrogenation of 2-acetylfuran with trans-[RuCl2{(R)-xylbinap}{(R)-daipen}]: Solid trans-[RuCl2{(R)-xylbinap}{(R)-daipen}] (30.5 mg, 0.025 mmol) and 2-acetylfuran (110.1 g, 1.00 mol) were placed in a 1.5-L stainless steel autoclave equipped with a mechanical stirring blade, a pressure gauge, and a gas inlet tube attached to a hydrogen source. Air present in the autoclave was replaced by argon. 2-Propanol (100 mL) and a 1.0 M (CH3)3COK solution in tert-butyl alcohol (7.5 mL, 7.5 mmol) were added to the autoclave under a stream of argon. The mixture was degassed by three cycles of vacuum-filling with argon. The vessel was pressurized to 50 atm, and then the reaction mixture was vigorously stirred for 22 h at 24 °C. The yield and ee values of (S)-1-(2-furyl)ethanol determined by GC analysis (HP-INNOWax and Chirasil-DEX CB columns) were 96 and 99 %, respectively. After the hydrogen gas was carefully vented, the solvent was removed under reduced pressure. Distillation of the residue gave (S)-1-(2-furyl)ethanol (92.8 g, 83 % yield). Bp: 76 °C (18 Torr); [α]
=−20.1° (c=1.00, CHCl3). - 146
- 147
- 147a
- 147b
- 147c
- 147d
- 147e
- 148
- 148a, , , Angew. Chem. 1984, 96, 166–167;Angew. Chem. Int. Ed. Engl. 1984, 23, 162–164;Direct Link:
- 148b, , Chem. Lett. 1984, 1431–1434; see also: , , , , Tetrahedron: Asymmetry 1991, 2, 101–104.
- 149
- 150
- 150a
- 150b
- 151, , , , J. Org. Chem. 1996, 61, 4144–4147; see also: A. Dondoni, D. Perrone, Aldrichimica Acta 1997, 30, 35–46.
- 152
- 152a
- 152b
- 152cT. Osawa, A. Tai, Y.Imachi, S. Takasaki in ref [3e], pp. 75–81;
- 152dT. Harada, T. Osawa in ref [3e], pp. 83–88;
- 152eT. Osawa, T. Harada, A. Tai, O. Takayasu, I. Matsuura in ref [69d], pp. 199–206;
- 152f
- 153
- 153a
- 153b
- 154
- 155
- 155a
- 155b
- 155c
- 155d
- 156, , , , , , , , , J. Am. Chem. Soc. 1988, 110, 629–631.
- 157T. Ohkuma, D. Ishii, H. Takeno, R. Noyori, J. Am. Chem. Soc.; in press.
- 158
- 159
- 159a
- 159b, , , J. Cardiovasc. Pharmacol. 1988, 12, 323–331;
- 159c, , , , , Mol. Pharmacol. 1989, 35, 295–303, refs therein
- 160, , , , J. Med. Chem. 1988, 31, 1412–1417, refs therein
- 161, Chem. Eng. News 1998, 76(48), 11–13.
- 162, , , , , , , , , J. Med. Chem. 1992, 35, 4516–4525.
- 163
- 163a
- 163b
- 164
- 165
- 165a
- 165b
- 166
- 166ain Comprehensive Organic Synthesis, Vol. 5 (Eds.: B. M. Trost, I. Fleming, L. A. Paquette), Pergamon, Oxford, 1991, pp. 827–873;
- 166bH. Frauenrath in ref [14b], Vol. E21d, pp. 3301–3547.
- 167Pd0-catalyzed allyl substitution:
- 167a, Palladium Reagents in Organic Syntheses, Academic Press, London, 1985, chap 5;
- 167bsee ref [1k], pp. 290–422.
- 168Y. Yamamoto in ref [14b], Vol. E21b, pp. 2011–2040.
- 169
- 169a
- 169b
- 169c
- 169d
- 170a
- 170b
- 170c
- 170d
- 171
- 172
- 172a
- 172b
- 172c
- 173
- 173a
- 173b
- 174, , , , , , Angew. Chem. 1997, 109, 300–303;Angew. Chem. Int. Ed. Engl. 1997, 36, 288–290.Direct Link:
- 175, , , , , , , , J. Am. Chem. Soc. 1987, 109, 1596–1597; Berichtigung: , , , , , , , , J. Am. Chem. Soc. 1987, 109, 4129.
- 176
- 177
- 178
- 179
- 179a
- 179b
- 180
- 181, in Perfumes: Art, Science and Technology (Eds.: P. M. Müller, D. Lamparsky), Blackie Academic & Professional, London, 1991, chap 4.
- 182Hydrogenation of 2-cyclohexenone catalyzed by an (S,S)-DIOP/Ir complex gave (R)-2-cyclohexenol in 25 % ee: , , , , , Tetrahedron: Asymmetry 1992, 3, 1001–1002.
- 183, , Org. Synth. Collect. Vol. 1988, 6, 459–460.
- 184
- 185
- 186
- 187
- 187a
- 187b
- 188
- 189
- 190
- 190a
- 190b
- 191
- 191a
- 191b
- 191c
- 192
- 193I. Yamada, R. Noyori, Org. Let. 2000 2, 3425–3427.
- 194
- 194a
- 194b
- 194c, , Chirality 1991, 3, 345–354;
- 194d
- 194e
- 194f
- 194g
- 195
- 195a
- 195b
- 195c
- 195d, , , , , Chirality 1998, 10, 717–721;
- 195eK. Mikami, M. Terada in ref [62c], chap 6;
- 195ffor a recent review article on asymmetric activation see K. Mikami, M. Terada, T. Korenaga, Y. Matsumoto, M. Ueki, R Angelaud, Angew. Chem. 2000, 102, 3676–3701; Angew. Chem. Int. Ed. 2000, 39, 3532–3556.
- 196
- 196a, , Angew. Chem. 1991, 103, 34–55;Angew. Chem. Int. Ed. Engl. 1991, 30, 49–69;Direct Link:
- 196b
- 196c
- 196din Advanced Asymmetric Synthesis (Ed.: G. R. Stephenson), Chapman & Hall, London, 1996, chap 2;
- 196e
- 196f, , Angew. Chem. 1998, 110, 3088–3127;Angew. Chem. Int. Ed. 1998, 37, 2922–2959;Direct Link:Direct Link:
- 196g
- 197Related diastereomeric Pt-(R)-BINOL-DPPE complexes:
- 197a, , , Angew. Chem. 1998, 110, 1615–1618;Angew. Chem. Int. Ed. 1998, 37, 1579–1582;Direct Link:Direct Link:
- 197b
- 198
- 199, , , , , , Angew. Chem. 1999, 111, 517–519;Angew. Chem. Int. Ed. 1999, 38, 495–497.Direct Link:Direct Link:
- 200
- 201
- 202
- 203see for example:
- 203a
- 203b
- 204
- 205, , , , , Angew. Chem. 1997, 109, 297–300;Angew. Chem. Int. Ed. Engl. 1997, 36, 285–288.Direct Link:
- 206
- 206a
- 206b
- 207
- 207a
- 207b
- 208
- 209
- 209a
- 209b
- 210
- 211see for example:
- 211aApplications of Biochemical Systems in Organic Chemistry, Part 1, 2 (Eds.: J. B. Jones, C. J. Sih, D. Perlman), Wiley, New York, 1976 (Techniques of Chemistry, Vol. 10);
- 211b, , Bioorganic Chemistry: A Chemical Approach to Enzyme Action, Springer, New York, 1981;
- 211cEnzymes in Organic Synthesis: Ciba Foundation Symposium III (Eds.: R. Porter, S. Clark), Pitman, London, 1985;
- 211dEnzymes as Catalysts in Organic Synthesis (Ed.: M. P. Schneider), Reidel, Dordrecht, 1986;
- 211eEnzymes in Synthetic Organic Chemistry (Eds.: C. H. Wong, G. M. Whitesides), Pergamon, Oxford, 1994 (Tetrahedron Organic Chemistry Series, Vol. 12);
- 211fEnzyme Catalysis in Organic Synthesis, Vol. 1, 2 (Eds.: K. Drauz, H. Waldmann), VCH, Weinheim, 1995;
- 211gNew Enzymes for Organic Synthesis: Screening, Supply and Engineering (Ed.: T. Scheper), Springer, Berlin, 1997.

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