Stereoselective Synthesis of <i>cis</i>‐1‐Aryl‐2‐benzoyl‐3,3‐dicyanocyclopropanes in the Presence of KF·2H<sub>2</sub>O
作者:Zhongjiao Ren、Weiguo Cao、Weiyu Ding、Yu Wang、Lilin Wang
DOI:10.1081/scc-200032500
日期:2004.1.1
Abstract KF · 2H2O was found to be a highly efficient base for synthesis of cis‐1,2‐cyclopropanes with arsonium salt and olefins. The advantages of the process are mild reaction condition, easy workup, excellent yields, and high stereoselectivity.
A new stereoselective approach for the synthesis of substituted 3-cyclopropylmethylene-1,3-dihydro-indol-2-one via the condensation reaction of cis-1-aryl-2-benzoyl-3,3-dicyanocyclopropanes with oxindole in water
作者:Dong Zhou、Haigang Yu、Ying Liu、Jie Chen、Hongmei Deng、Min Shao、Zhongjiao Ren、Weiguo Cao
DOI:10.1016/j.tetlet.2010.08.025
日期:2010.10
A new stereoselective approach for the synthesis of substituted 3-cyclopropylmethylene-1,3-dihydroindol-2-one via the condensation reaction of cis-1-aryl-2-benzoyl-3,3-dicyanocyclopropanes with oxindole in water was achieved. (C) 2010 Elsevier Ltd. All rights reserved.
Highly Stereoselective Cyclopropanation of Olefins Catalyzed by a Novel<i>C</i><sub>3</sub>-Symmetric Arsine
作者:Changqing Wang、Yanping Yi、Daoan Xiao、Rong Zhou、Hui Liang、Guangquan Mei
DOI:10.1080/00397911.2013.817018
日期:2014.2.16
A novel C-3-symmetric arsine was employed in the one-pot cyclopropanation of olefins with carbonyl-stabilized arsonium ylides formed in situ from phenacyl bromide in the presence of NaHCO3. This new arsine demonstrates good stereoselectivity and activity in the one-pot cyclopropanation of arylidenemalononitrile. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]
Novel Procedure for Highly Stereoselective Synthesis of Bicyclic Cyclopropane‐lactam with <i>cis</i>‐2‐Aryl‐1‐benzoyl‐3,3‐dicyanocyclopropane and 2‐Cyanomethyl‐1,3‐benzothiazole in Water