SYNTHESIS OF OPTICALLY-ACTIVE BIS(2-OXAZOLINES) - CRYSTAL-STRUCTURE OF A 1,2-BIS(2-OXAZOLINYL)BENZENE.ZNCL2 COMPLEX

被引：246

作者：

BOLM, C ^{[1
]}

WEICKHARDT, K ^{[1
]}

ZEHNDER, M ^{[1
]}

RANFF, T ^{[1
]}

机构：

[1] UNIV BASEL,INST ANORGAN CHEM,CH-4056 BASEL,SWITZERLAND

来源：

CHEMISCHE BERICHTE | 1991年 / 124卷 / 05期

关键词：

BIS(2-OXAZOLINES); CHELATING LIGANDS; ZINC COMPLEXES; CATALYSIS;

D O I：

10.1002/cber.19911240532

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Dinitriles (5 - 7, 12, 13) react with enantiomerically pure beta-amino alcohols (8 - 11, 17) under zinc chloride catalysis to give optically active C2-symmetric bis(oxazolines). 1,2-Bis(2-oxazolin-2-yl)benzenes 1a - e are obtained under mild reaction conditions. H-1-NMR spectroscopy indicates the formation of 1:1 complexes 23 of these compounds with ZnCl3. The energy required for a conformational interconversion of zinc dichloride complex 23e was determined by variable-temperature H-1-NMR studies. An X-ray structure analysis was performed with the substituted [1,2-bis(2-oxazolinyl)benzene]zinc dichloride complex 23a.

引用

页码：1173 / 1180

页数：8

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