Rhodium-Catalyzed Tandem Addition–Cyclization of 1,5-Enynes with Organoboronic Acids for the Synthesis of Alkylidene-Cyclobutanes

Hyeji Kim, Kyoungmin Choi, Dongseok Jang, Hyun-Suk Um, Yeehwan Kim, and Chulbom Lee

Helv. Chim. Acta 105, e202100220 (2021). DOI

Dedicated to Prof. E. Peter Kündig on the occasion of his 75th birthday and retirement