Effects of the electronic properties of chiral chelating diphosphines in stereoselective Diels-Alder cycloaddition reactions promoted by their transition metals complexes

被引：19

作者：

Celentano, G

Benincori, T

Radaelli, S

Sada, M

Sannicolò, F

机构：

[1] Univ Milan, Dipartimento Chim Organ & Ind, I-20133 Milan, Italy

[2] Ctr CNR Sintesi & Stereochim Speciali Sistemi Orn, I-20133 Milan, Italy

[3] Univ Insubria, Dipartimento Sci Chim Fis & Matemat, I-22100 Como, Italy

[4] Univ Milan, CNR, Ist Chim Organ, Fac Farm, I-20133 Milan, Italy

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 643卷

关键词：

chiral diphosphines; C-2 symmetry ligands; heteroaromatic ligands; stereoselective [4+2]-cycloadditions; asymmetric catalysis;

D O I：

10.1016/S0022-328X(01)01459-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The Pd(II) and Pt(II) complexes (perchlorates and hexafluoroantimoniates, respectively) of a series of C-2 symmetric biheteroaromatic diphosphines differing in their electronic properties at phosphorus have been tested as catalysts in [4 + 2]-cycloaddition reactions of cyclopentadiene and N-2-alkenoyl-1,3-oxazolidine-2-ones. The best stereoselection results were obtained with the complexes produced from electron-rich ligands, which were found to give also the kinetically most active catalysts. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：424 / 430

页数：7

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