A new class of catalysts with superior activity and selectivity for amidocarbonylation reactions

被引:25
作者
Beller, M [1 ]
Eckert, MK [1 ]
Vollmuller, F [1 ]
机构
[1] Tech Univ Munich, Dept Inorgan Chem, D-85747 Garching, Germany
关键词
amidocarbonylation; palladium; catalysis; N-acyl amino acids; multi-component reaction;
D O I
10.1016/S1381-1169(97)00286-0
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
For the first time, a detailed investigation of the newly developed palladium (Pd)-catalyzed amidocarbonylation for the synthesis of various N-acyl amino acids is described. A screening of important parameters led to a highly efficient process with the active catalyst system PdBr2/LiBr/H2SO4. Based on our study of the influence of solvent, temperature, pressure, co-catalysts and substrates, we draw up a profile of the Pd-catalyzed amidocarbonylation and discuss the mechanism in detail. The successful employment of acetals and various aldehydes as starting materials demonstrates the synthetic potential of this atomeconomic process. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:23 / 33
页数:11
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