Borane catalysed cyclopropenation of arylacetylenes.

Katarina StefkovaMatthew J HeardAyan Dasgupta Rebecca L Melen

Published in: Chemical communications (Cambridge, England) (2021)

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.

Keyphrases

transition metal
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highly efficient
electron transfer
solar cells
energy transfer
metal organic framework
crystal structure