Copyright © 2015 SIOC, CAS, Shanghai & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editors: Guozhen Ji, Shengming Ma
Online ISSN: 1614-7065
Associated Title(s): Chemistry - A European Journal, Chemistry – An Asian Journal, Israel Journal of Chemistry, The Chemical Record
Wei Zhang, Yanjing Wang, Cuibing Bai, Jialong Wen and Naixing Wang
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400836
A novel and concise method for the direct synthesis of γ-nitro ketones and 1,3-dinitro compounds has been developed. It is the first time to report a domino reaction to synthesize aliphatic nitro compounds via domino Michael/retro-Claisen fragmentation reaction.
Shiyao Tang, Shu Liu, Zhiqiang Liu, Fengrui Song and Shuying Liu
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400789
A sequential extraction project, an HPLC-IT-MSn and an HPLC-Q-TOF-MS method were successfully established to separate and identify the constituents of DZXW.
Xiaoyan Zhu, Yonggang Wu, Lina Zhou, Yuan Wang, Hongchi Zhao, Baoxiang Gao and Xinwu Ba
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400793
Ladder polymers and model compounds were obtained through intramolecular cyclization reaction in the presence of acid from the precursors. The planar polymers and model compounds show untypical UV and PL properties for a rigid, planar, one-dimensional π-system. The regioisomers in intramolecular cyclization reaction can be clearly identified from syn- and anti-structures.
Sanlong Chen, Xiaolan Qiao, Heping Li and Hongxiang Li
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400811
Acceptor-donor-acceptor type compounds with 2-dicyanomethylen-3-cyano-4,5,5-trimethyl-2,5-dihydrofuran, dicyanovinyl and 3-ethyl-2-thioxothiazolidin-4-one as electron acceptors were designed and synthesized. Their physicochemical properties were thoroughly investigated.
Yehui Chen, Guochang Qin, Liwen Yang and Nianfa Yang
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400819
The application of helical poly[(S)-3-vinyl-2,2′-dihydroxy-1,1′-binaphthyl] (L*) in the asymmetric addition of diethylzinc to aldehydes has been studied. The catalytic system employing 10 mol% of L* and 150 mol% of Ti(OiPr)4 was found to promote the addition of diethylzinc to a wide range of aromatic aldehydes, giving up to 99% enantiomeric excess (ee) and up to 93% yield of the corresponding secondary alcohol at 0°C. The chiral polymer can be easily recovered and reused without loss of catalytic activity as well as enantioselectivity.
Junhua Li and Daming Du
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400829
Enantioselective synthesis of biologically active dihydropyrano[2,3-c]pyrazoles has been achieved through a squaramide-catalysed Michael addition/Thorpe-Ziegler type cyclization cascade reaction between arylidenepyrazolones and malononitrile. A series of optically active dihydropyano[2,3-c]pyrazoles were obtained in excellent yields (up to 99%) and moderate to good enantioselectivities (up to 79% ee) under mild reaction conditions.
Chiyoung Park and Kyoung Taek Kim
Article first published online: 3 FEB 2015 | DOI: 10.1002/cjoc.201400875
This review outlines the range and perspectives of the thermodynamic characteristics of pillar[n]arenes in comparison with other successful cavitands, such as cyclodextrins and cucurbit[n]urils.
Fan Zhang, Xianliang Cao, Demei Tian and Haibing Li
Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400675
A novel coumarin-pillararene derivative (P5C10) was prepared. Fluorescence spectroscopy indicates that P5C10 shows good selectivity towards methyl-parathion. A combination of NMR spectra, MALDI-TOF spectra and computational calculations reveals the formation of a host-guest complex driven by π-π stacking interactions.
Yujuan Zhou, Yong Yao and Feihe Huang
Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400697
Guiyan Liu, Bin Wu and Jianhui Wang
Article first published online: 14 JAN 2015 | DOI: 10.1002/cjoc.201400765
A Grubbs-Hoveyda pre-catalyst having a trimeric resting state is presented. It was characterized by NMR, HRMS and elemental analysis. Catalytic study for ring-closing metathesis was evaluated. Highly activity for RCM of many substrates was showed.
Pei-Qiang Huang, Wei Ou and Jian-Liang Ye
Article first published online: 12 DEC 2014 | DOI: 10.1002/cjoc.201400762
A versatile and divergent two-step transformation of malimides to racemic tetramates and tetramic acids is described. The method consists of Grignard reagent addition with malimides, and concentrated HCl-promoted chemoselective transformations of the latter.
Luqman Ali Shah, Wulian Chen, Mohammad Siddiq, Jianhua Hu, Angang Dong and Dong Yang
Article first published online: 12 DEC 2014 | DOI: 10.1002/cjoc.201400751
Thermal and pH dual responsive P(NIPAM-co-VI) copolymer was used as carriers to load Ag nanoparticles for the first time. The nanoparticles could be stably dispersed at all pH values, and were favorable to be used as a catalyst at a wide pH range, but more efficient at low pH.