Synthesis 2012(5): 705-710  
DOI: 10.1055/s-0031-1289693
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Efficient and Divergent Synthesis of Functionalized Cyclopropanes via Iodoform Reaction

Dingyuan Zhang, Rui Zhang, Dexuan Xiang, Ning Zhang*, Yongjiu Liang, Dewen Dong*
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. of China
Fax: +86(431)85262676; e-Mail: zhangningtum@gmail.com; e-Mail: dwdong@ciac.jl.cn;
Further Information

Publication History

Received 26 November 2011
Publication Date:
03 February 2012 (online)

Abstract

Efficient and divergent one-pot synthesis of cyclopropyl amides and esters from readily available 1-acetylcyclopropanes via iodoform reaction based on the selection of reaction conditions is reported. A series of substituted cyclopropyl amides were synthesized from 1-acetylcyclopropanes, iodine, and ammonia in water in the presence of K2CO3 in good yields, whereas substituted cyclopropyl esters were obtained from the reaction of 1-acetylcyclopropanes with iodine and alcohols in the presence of DBU.

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The relative configurations of cis -1k, trans -1l, cis -2k, and trans -2l were determined by NOESY, see Supporting Information.