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Updated: Dec 21, 2025

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
Published on: September 8, 2013
Iridium-Catalyzed Cyclative Indenylation and Dienylation through Sequential B(4)-C Bond Formation, Cyclization, and
Yonghyeon Baek1, Kiun Cheong1, Gi Hoon Ko1
1Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea.
Abstract:
Described herein is the first iridium-catalyzed cyclative indenylation through sequential B(4)-C and intramolecular C-C bond formation from o-carboranes and propargyl alcohols, leading to the formation of B(4)-indenylated o-carboranes with excellent regioselectivity via direct B-H activation. Moreover, the iridium-catalyzed regioselective 1,3-dienylation has been accessed through sequential B-H activation, dehydration, and decarboxylation, producing B(4)-dienylated o-carboranes.
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