Iridium-catalyzed asymmetric allylation of sodium triisopropylsilanethiolate: a new way to form chiral thiols

The iridium phosphoramidite complex-promoted regio- and enantioselective reaction of allylic carbonates with sodium triisopropylsilanethiolate produced allylic sulfides in 40-77% yields with up to 97 : 3 (branched?:?linear) and 89% ee, which were readily transformed into chiral thiol in 68% yield with 87% ee or disulfides with two chiral C-S bond centers in 40-73% yields with up to 90 : 10 dr and 99% ee.