Recoverable chiral palladium-sulfonated diphosphine catalysts for the asymmetric hydrocarboxylation of vinyl arenes

被引：32
|
作者：
Miquel-Serrano, MD
Aghmiz, A
Diéguez, M
Masdeu-Bultó, AM
Claver, C
Sinou, D
机构：
[1] Univ Lyon 1, Lab Synth Asymetrique, CPE, F-69622 Villeurbanne, France
[2] Univ Rovira & Virgili, Dept Quim Fis & Inorgan, Tarragona 43005, Spain
来源：
TETRAHEDRON-ASYMMETRY | 1999年 / 10卷 / 23期
关键词：
D O I：
10.1016/S0957-4166(99)00522-4
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Water-soluble palladium complexes with sulfonated diphosphines dpppts (1,3-bis[di(m-sodiumsulfonatophenyl)phosphino]propane), dppbts (1,4-bis[di(m-sodiumsulfonatophenyl)phosphino]butane), (S,S)-BDPPTS (2,4-bis[di(m-sodiumsulfonatophenyl)phosphino butane) and (R,R)-CBDTS (1,2-bis[di(m-sodiumsulfonatophenyl)phosphinomethyl]cyclobutane) are active in the hydrocarboxylation of vinyl arenes without addition of acid. The stability of the catalyst systems increases when the reaction is performed in an acidic medium and the catalysts could be recycled twice with no loss in activity or enantioselectivity in the case of the [Pd(OAc)(2)]/BDPPTS system. Enantioselectivities up to 43% are obtained. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：4463 / 4467
页数：5
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