Highly enantioselective alkynylation of aldehydes catalyzed by a new oxazolidine–titanium complex
作者:Zhou Xu、Jincheng Mao、Yawen Zhang
DOI:10.1039/b719624e
日期:——
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%).