A dream combination for catalysis: highly reactive and recyclable scandium(III) triflate-catalyzed cyanosilylations of carbonyl compounds in an ionic liquid

The catalytic activity of lanthanide triflates, particularly scandium triflate, increased dramatically in [ bmim][SbF(6)], allowing the cyanosilylation of a variety of aldehydes and ketones with a turnover frequency up to 48 000 mol h(-1) and a total turnover number of 100 000.