Highly enantioselective alkynylation of aldehydes catalyzed by a new oxazolidine-titanium complex

Org Biomol Chem. 2008 Apr 7;6(7):1288-92. doi: 10.1039/b719624e. Epub 2008 Feb 22.

Abstract

The readily available and inexpensive new chiral oxazolidine in combination with Ti(O(i)Pr)(4) was found to catalyze the reaction of an alkynylzinc reagent with various types of aldehydes to generate chiral propargylic alcohols with high enantioselectivities (up to 95%) and excellent yields (up to 98%).