Silica gel-supported polyphosphoric acid (PPA/SiO2) as an efficient and reusable catalyst for conversion of carbonyl compounds into oxathioacetals and dithioacetals

被引:71
作者
Aoyama, T [1 ]
Takido, T
Kodomari, M
机构
[1] Nihon Univ, Coll Sci & Technol, Dept Mat & Appl Chem, Chiyoda Ku, Tokyo 1018308, Japan
[2] Shibaura Inst Technol, Dept Appl Chem, Minato Ku, Tokyo 1088548, Japan
关键词
oxathioacetals; dithioacetals; protecting groups; polyphsphoric acid; silica gel;
D O I
10.1055/s-2004-832812
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A simple and efficient method for the conversion of carbonyl compounds to oxathioacetals and dithioacetals by using polyphosphoric acid supported on silica gel (PPA/SiO2) as an acid catalyst have been developed. PPA/SiO2 is easily recovered from the reaction mixture and reused without a decrease in catalytic activity.
引用
收藏
页码:2307 / 2310
页数:4
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