3 years ago

Small‐Ring Metathesis: Delights and Difficulties

Biswajit Panda

Abstract

The metathetical opening of strained cyclopropene and cyclobutene rings is a well‐established conversion, successfully used in several total syntheses and in the preparation of polymers. Concurrently, it is generally considered that small cyclic products cannot be easily made by ring‐closing metathesis (RCM). The current reports on the preparation of substituted cyclobutenes via 1,5‐enyne RCM changed this scenario. In recent years, there have been significant pieces of work on metathesis of strained three‐ and four‐membered rings reported, which required a thorough review.

Publisher URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/ajoc.201800515

DOI: 10.1002/ajoc.201800515

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