Pd-Catalyzed sequential B(3)–I/B(4)–H bond activation for the synthesis of 3,4-benzo-o-carboranes
- 24 December 2020
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Dalton Transactions
- Vol. 50 (5), 1766-1773
- https://doi.org/10.1039/d0dt03740k
Abstract
A palladium-catalyzed sequential B(3)–I and B(4)–H bond activation has been achieved for the synthesis of 3,4-benzo-o-carboranes via a formal [2 + 2 + 2] cycloaddition of 3-I-o-carborane with 2 equiv. of arylalkynes. This represents a new protocol to construct o-carborane-fused cyclics in one process, in which the Pd fragment migrates formally from the B(3) to B(4) position of the cage.Keywords
Funding Information
- National Natural Science Foundation of China (21772223)
- Science and Technology Commission of Shanghai Municipality (18590760800)
- Chinese Academy of Sciences
- Research Grants Council, University Grants Committee (14305018)
- Chinese University of Hong Kong
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