Heterogeneous organic base-catalyzed reactions enhanced by acid supports

被引:125
作者
Motokura, Ken [1 ]
Tada, Mizuki [1 ]
Iwasawa, Yasuhiro [1 ]
机构
[1] Univ Tokyo, Grad Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan
关键词
D O I
10.1021/ja0704333
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Amorphous silica-alumina-supported amines (SA-NR2) were found to be excellent heterogeneous catalysts for a variety of carbon-carbon bond-forming reactions, such as cyano-O-ethoxycarbonylation, Michael reaction, and nitro-aldol reaction. These reactions were hard to proceed either with amines alone or on the SA alone. Solid-state C-13 MAS NMR analysis revealed the acid-base interaction of the H+ site and amine group on the SA-NR2 surface, which makes an acid-base dual activation mechanism possible for carbon-carbon bond-forming reactions.
引用
收藏
页码:9540 / +
页数:3
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