申请人:Kobayashi Shu
公开号:US20070238902A1
公开(公告)日:2007-10-11
An aldol reaction in an aqueous solution between an aldehyde represented by the following formula (I):
R—CHO (I)
(wherein R is a hydrocarbon group which may have an substituent), and a silicon enolate represented by the following formula (II):
(wherein R
1
and R
2
are a hydrogen atom or an aliphatic hydrocarbon group, at least one of them being an aliphatic hydrocarbon group; and
R
3
is a substituent selected from the group consisting of an aliphatic hydrocarbon group, an aromatic hydrocarbon group and a sulfur-containing substituent, wherein R
2
and R
3
may be combined with each other to form a ring) is performed so as to generate diastereoselectivity by using FeCl
3
, which is a low-cost Lewis acid, and a surfactant.
在水溶液中进行的醛缩反应,其中一个醛以以下式表示:R—CHO (I)(其中R是一个可能带有取代基的碳氢基团),另一个是以以下式表示的硅烯醇:(式中R1和R2是氢原子或脂肪烃基团,至少一个是脂肪烃基团;R3是从脂肪烃基团、芳香烃基团和含硫取代基组成的群中选择的取代基,其中R2和R3可以结合在一起形成环),通过使用FeCl3(一种低成本的Lewis酸)和表面活性剂来产生对映选择性。