Dramatic acceleration of migratory insertion in [MeIr(CO)2I3]– by methanol and by tin(II) iodide
Abstract
Carbonylation of [MeIr(CO)2I3]– to [MeCOIr(CO)2I3]– requires temperatures >80 °C in chlorobenzene, but is dramatically accelerated on addition of methanol (×104 at 33 °C) or of the Lewis acid Snl2(× 200 at 93 °C); the acceleration is proposed to arise from activation of an Ir–I bond.