Cu(I)-catalyzed direct enantioselective cross aldol-type reaction of acetonitrile

Org Lett. 2005 Aug 18;7(17):3757-60. doi: 10.1021/ol051423e.

Abstract

Direct catalytic enantioselective cross aldol-type reaction of an acetate surrogate was developed using Cu alkoxide-chiral phosphine complexes as catalysts. Chemoselective activation and deprotonation of the donor substrate (acetonitrile) by the soft metal alkoxide in a strongly donating solvent (HMPA) are key to success in this reaction. Useful chemical yields and promising enantioselectivities are produced using either DTBM-SEGPHOS or a tuned BIPHEP as a chiral ligand. [reaction: see text]