First heterogeneously palladium catalysed α-arylation of diethyl malonate

被引:37
作者
Djakovitch, L [1 ]
Köhler, K [1 ]
机构
[1] Tech Univ Munich, Inst Anorgan Chem, D-85748 Garching, Germany
关键词
heterogeneous catalytic alpha-arylation; carbonyl derivatives; zeolite supported palladium; aryl halides;
D O I
10.1016/S0022-328X(00)00204-7
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Pd exchanged NaY zeolites ([Pd(0)](-), [Pd(II)](-) and entrapped [Pd(NH3)(4)]) exhibit a good activity towards the alpha-arylation of carbonyl compounds using different para-substituted aryl bromides. Low Pd-concentrations (only 2 mol%) are required to observe interesting activity. The catalysts can easily be separated from the reaction mixture and reused without any loss in activity. For large-scale applications the alternative use of an insoluble base as K2CO3 seems to be promising. The electronic nature of the aryl halides plays a limited role concerning the rate of the reaction. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:101 / 107
页数:7
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