Lewis Base Assisted Bronsted Base Catalysis: Bidentate Phosphine Oxides as Activators and Modulators of Bronsted Basic Lanthanum-Aryloxides

被引：46
|
作者：
Morimoto, Hiroyuki [1 ]
Yoshino, Tatsuhiko [1 ]
Yukawa, Takafumi [1 ]
Lu, Gang [1 ]
Matsunaga, Shigeki [1 ]
Shibasaki, Masakatsu [1 ]
机构：
[1] Univ Tokyo, Grad Sch Pharmaceut Sci, Bunkyo Ku, Tokyo 1130033, Japan
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 47期
关键词：
amino acids; Bronsted bases; combined catalysis; lanthanum; Lewis bases;
D O I：
10.1002/anie.200803682
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Chemical Equation Presented) Dynamic Duo: A Lewis basic bidentate phosphine oxide was effective for activating and modulating the properties of Brønsted basic lanthanum aryl oxides. The Lewis base 1/lanthanum aryl oxide system was suitable for anti-selective Mannich-type reactions of trichloromethyl ketones (see scheme), affording unique building blocks for azetidine-2-carboxylic acids as well as β-amino acids. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：9125 / 9129
页数：5
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