Unlocking the catalytic hydrogenolysis of chlorosilanes into hydrosilanes with superbases

Gabriel Durin (1) , Jean-Claude Berthet (1) , Emmanuel Nicolas (1) , Thibault Cantat (1)

1 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)

The efficient synthesis of hydrosilanes by catalytic hydrogenolysis of chlorosilanes is described, using an iridium (III) pincer catalyst. A careful selection of a nitrogen base (incl. sterically hindered guanidines and phosphazenes) can unlock the preparation of Me$_3$SiH, Et$_3$SiH and Me$_2$SiHCl in high yield (up to 98%), directly from their corresponding chlorosilanes.

Mots clés: Hydrosilane synthesis; hydrogenolysis; homogenous catalysis; superbases; iridium pincer complex

Domaines: Catalyse

Gabriel Durin, Jean-Claude Berthet, Emmanuel Nicolas, Thibault Cantat. Unlocking the catalytic hydrogenolysis of chlorosilanes into hydrosilanes with superbases. ACS Catalysis, 2021, 11 (17), pp.10855-10861. ⟨10.1021/acscatal.1c01515⟩. ⟨cea-03547774v2⟩