Dedicated to Professor Hans-Ulrich Reißig on the occasion of his 75th birthday.
Abstract
Cyclobutanes and cyclobutenes exhibit intriguing structures and demonstrate significant
biological activities and diverse synthetic applications. This review aims to summarize
recent progress in strain-release-driven ring-opening reactions of bicyclo[1.1.0]butanes
(BCBs) to synthesize these four-membered carbon rings. It outlines the strategies,
regio- and stereoselectivity, the synthetic scope of reactions, and the mechanistic
implications of the catalytic ring-opening process, providing a supplementary perspective
to existing reviews.
1 Introduction
2 Thermally Driven Nucleophilic Ring-Opening
3 Thermally Driven Rearrangement and Isomerization Reaction
4 Light-Driven Ring-Opening
5 Transition-Metal/Lewis Acid Catalyzed Ring-Opening
6 Conclusion and Outlook
Key words
strained molecules - bicyclo[1.1.0]butanes - cyclobutanes - cyclobutenes - ring-opening
reaction