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

Authors

  • 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

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)


Graphical Abstract

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