Synthesis and catalytic application of a donor-free bismuthenium cation.

Herein, we report the synthesis and catalytic application of a new ,'-dineopentyl-1,2-phenylenediamine-based bismuthenium cation (3). 3 has been synthesized the treatment of chlorobismuthane LBiCl [L = 1,2-CH{N(CHBu)}] (2) with AgSbF, and was further used as a robust catalyst for the cyanosilylation of ketones under mild reaction conditions. Experimental studies and DFT calculations were performed to understand the mechanistic pathway.