SEARCH Articles Figures Tables A range of substrates was tolerated in the process, providing relatively uniform yields and with enantioselectivities of up to 85 ee. Indeed, key functional groups cleanly tolerated in the procedure included aromatic as well as branched and unbranched aldehydes, internal alkynes that either possess or lack an aromatic substituent, terminal alkynes, and unprotected alcohols, wherein the trialkylsilyl group was regioselectively installed on the newly formed hydroxyl group. The regioselection of the alkyne insertion was high, with the exception of internal alkynes that possessed two aliphatic substituents 75 [Publishers Imprint]