Reaction of chiral titanium Z-enolates with chiral α-silyloxy aldehydes. Syntheses of NFX-2 and Antimycinone
作者:Cristina Esteve、Mònica Ferreró、Pedro Romea、Fèlix Urpí、Jaume Vilarrasa
DOI:10.1016/s0040-4039(99)00987-9
日期:1999.7
Titanium-mediated aldol reactions of 1 and (S)-2-tert-butyldiphenylsilyloxy aldehydes (matched pair) afford syn Felkin diastereomers in excellent yield and absolute stereochemical control. Having established that chain length does not affect the yield of the titanium aldol reactions we have been able to achieve short, high yielding and enantioselective syntheses of NFX-2 and Antimycinone.
钛介导的1和(S)-2-叔丁基二苯基甲硅烷氧基醛(匹配对)的醇醛缩合反应可提供出色的收率和绝对的立体化学控制的合成Felkin非对映异构体。确定链长不会影响钛醇醛缩合反应的收率,我们已经能够实现NFX-2和抗霉素的短,高收率和对映选择性合成。