Selective Hydrosilylation of Esters to Aldehydes Catalysed by Iridium(III) Metallacycles through Trapping of Transient Silyl Cations

作者:Corre Yann; Rysak Vincent; Capet Frederic; Djukic Jean Pierre; Agbossou Niedercorn Francine; Michon Christophe
来源:Chemistry - A European Journal, 2016, 22(39): 14036-14041.
DOI:10.1002/chem.201602867

摘要

The combination of an iridium(III) metallacycle and 1,3,5-trimethoxybenzene catalyses rapidly and selectively the reduction of esters to aldehydes at room temperature with high yields through hydrosilylation followed by hydrolysis. The ester reduction involves the trapping of transient silyl cations by the 1,3,5-trimethoxybenzene co-catalyst, supposedly by formation of an arenium intermediate whose role was addressed by DFT calculations.

  • 出版日期2016-9