Rhodium-Catalyzed B(4)–H and B(3)–H Alkylation Reaction of Pyridyl <i>o</i>‑Carboranes with α‑Diazodicarboxylates

An efficient Rh-catalyzed B(4)–H and B(3)–H alkylation reaction was demonstrated from the reactions of a variety of pyridyl o-carboranes with α-diazodicarboxylates with the release of molecular nitrogen, leading to the production of B(4)–H and B(3)–H alkylated o-carboranes in good to excellent yields with high selectivity, a wide substrate scope, and good functional group tolerance.