Asian Journal of Organic Chemistry

Cover image for Vol. 3 Issue 8

Managing Editor: Richard Threlfall; Editorial Board Chairs: Sung Ho Kang, Keiji Maruoka, Deqing Zhang

Impact Factor: 2.292

ISI Journal Citation Reports © Ranking: 2013: 27/58 (Chemistry Organic)

Online ISSN: 2193-5815

Associated Title(s): Advanced Synthesis & Catalysis, Chemistry – An Asian Journal, European Journal of Organic Chemistry

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August 01, 2014

VIP: Synthesis of 19-Nor-Vitamin D A-Ring Synthons via Ring-Closing Olefin Metathesis

Yu Nagai, Tomoe Tanami, Junko Abe, Dr. Hazuki Nagai, Toru Hamamizu, Kaichiro Kominato, Keisuke Iida and Prof. Dr. Kazuo Nagasawa

Synthesis of 19-Nor-Vitamin D A-Ring Synthons via Ring-Closing Olefin MetathesisGive me a D: A synthetic method for making A-ring synthons for 19-nor-vitamin D was developed based on ring-closing olefin metathesis (RCM) with a linear precursor, followed by palladium-catalyzed isomerization of the endocyclic olefin product to give the target exocyclic olefin. PG=protecting group; TBS=tert-butyldimethylsilyl; Tf=trifluoromethanesulfonyl.

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Recently Published Articles

  1. Synthesis, Physical Properties, and Photocurrent Behavior of Strongly Emissive Boron-Chelate Heterochrysene Derivatives

    Dr. Hailei Zhang, Dr. Xiaozhong Hong, Prof. Xinwu Ba, Bei Yu, Dr. Xin Wen, Dr. Sujuan Wang, Prof. Xuefei Wang, Lei Liu and Prof. Jinchong Xiao

    Article first published online: 1 SEP 2014 | DOI: 10.1002/ajoc.201402131

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    Crysene point: A N,O-chelated boron complex 2 and its analogue 1 have been synthesized and characterized. Single crystal analysis of 1 shows that all carbon and nitrogen atoms are almost in a single plane. 1 and 2 emit green and yellow light in dichloromethane, respectively. The photocurrent response of a 1-single-walled carbon nanotube thin film is steady and reproducible.

  2. Palladium-Catalyzed Desulfinative Iodination of Sodium Sulfinates and Sulfonyl Hydrazides

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    ‘Tis I: Palladium-catalyzed desulfinative iodination of sodium sulfinates and sulfonyl hydrazides with KI or I2 can be realized under mild reactions using molecular oxygen as the environmentally benign oxidant. The reaction is not sensitive to moisture and is thus very easy to handle. Various functional groups are well tolerated under the optimized reaction conditions. NMP=N-methylpyrrolidone; TFA= trifluoroacetic acid.

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