Asymmetric Synthesis of γ-Hydroxy α,β-Unsaturated Aldehydes via Enantioselective Direct Addition of Propargyl Acetate to Aldehydes
作者:Emad El-Sayed、Neel K. Anand、Erick M. Carreira
DOI:10.1021/ol016431j
日期:2001.9.1
the first example of enantioselective and diastereoselective aldehyde additions of propargyl acetate to aldehydes using the methodology recently reported from our laboratories. Subsequent O-silyl protection, Pd-catalyzed isomerization, AcOH addition, and hydrolysis result in optically active gamma-hydroxy alpha,beta-unsaturated aldehydes as powerful building blocks. Reaction: see text.
我们使用实验室最近报告的方法,报告了炔丙基乙酸酯对醛的对映选择性和非对映选择性醛加成的第一个例子。随后的O-甲硅烷基保护,Pd催化的异构化,AcOH加成和水解会导致光学活性的γ-羟基α,β-不饱和醛作为有效的结构单元。反应:见文字。