The Mukaiyama Aldol Reactions for Congested Ketones Catalyzed by Solid Acid of Tin(IV) Ion-exchanged Montmorillonite

被引：10
|
作者：
Takehira, Satoshi [1 ]
Masui, Yoichi [2 ]
Onaka, Makoto [2 ]
机构：
[1] Univ Tokyo, Grad Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan
[2] Univ Tokyo, Grad Sch Arts & Sci, Dept Chem, Meguro Ku, Tokyo 1538902, Japan
来源：
CHEMISTRY LETTERS | 2014年 / 43卷 / 04期
关键词：
SILYL ENOL ETHERS; HOMOGENEOUS CATALYSIS; CARBONYL-COMPOUNDS; BISMUTH TRICHLORIDE; EFFICIENT CATALYST; CYANOSILYLATION; NUCLEOPHILES;
D O I：
10.1246/cl.131095
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Tin(IV) ion-exchanged montmorillonite (Sn-Mont) was found to be an excellent solid acid catalyst for the Mukaiyama aldol reactions of congested ketones with silicon enolates from ketones as well as esters. It was disclosed that Sn-Mont was far more active than other metal ion- or proton-exchanged montmorillonites and typical homogeneous acid catalysts such as TMSOTf and BF3 center dot OEt2.
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收藏
页码：498 / 500
页数：3
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