Radical Addition of Dimethyl 2‐Ethynylcyclopropane‐1,1‐dicarboxylate to Electron‐Rich Olefins

Abstract

The phenylseleno radical–catalyzed addition of dimethyl 2‐ethynylcyclopropane‐1,1‐dicarboxylate to electron–rich olefins has been achieved. This radical process leads to formation of highly substituted ethynylcyclopentane products through a [3+2] annulation.

Keywords:

• annulation
• cyclopentane
• radical
• vinyl cyclopropane

Acknowledgments

We thank the National Science Foundation (NSF) (RUI‐CHE‐0315745) for their support of this research.