Synthesis 2020; 52(06): 928-932
DOI: 10.1055/s-0039-1690809
paper
© Georg Thieme Verlag Stuttgart · New York

Iodobenzene-Catalyzed Oxidative Cyclization for the Synthesis of Highly Functionalized Cyclopropanes

Yang Li
,
Hao Guo
,
Renhua Fan
Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. of China   Email: rhfan@fudan.edu.cn
› Author Affiliations
Financial support from the National Natural Science Foundation of China (21572033) and the Science and Technology Commission of Shanghai Municipality (19ZR1403400) is greatly appreciated.
Further Information

Publication History

Received: 22 December 2019

Accepted after revision: 09 January 2020

Publication Date:
29 January 2020 (online)


Abstract

An iodobenzene-catalyzed oxidative cyclization of Michael adducts of activated methylene compounds with nitroolefins or chalcones is developed. mCPBA is used as oxidant together with Bu4NI for the generation of a highly reactive iodine(III) species to mediate the cyclopropanation via a ligand exchange and reductive elimination process. A range of highly functionalized cyclopropanes are synthesized with high diastereoselectivities.

Supporting Information