Issue 55, 2021

Borane catalysed cyclopropenation of arylacetylenes


Triarylboranes have gained substantial attention as catalysts for C–C bond forming reactions due to their remarkable catalytic activities. Herein, we report B(C6F5)3 catalysed cyclopropenation of a wide variety of arylacetylenes using donor–acceptor diazoesters. A mild reaction protocol has been developed for the synthesis of functionalised cyclopropenes (33 examples) in good to excellent yields.

Graphical abstract: Borane catalysed cyclopropenation of arylacetylenes

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Article information

Article type
07 Apr 2021
07 Jun 2021
First published
08 Jun 2021
This article is Open Access
Creative Commons BY license

Chem. Commun., 2021,57, 6736-6739

Borane catalysed cyclopropenation of arylacetylenes

K. Stefkova, M. J. Heard, A. Dasgupta and R. L. Melen, Chem. Commun., 2021, 57, 6736 DOI: 10.1039/D1CC01856F

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