A MODEL FOR THE HOMOGENEOUS ISOSPECIFIC ZIEGLER-NATTA POLYMERIZATION OF OLEFINS - ENANTIOSELECTIVITY IN THE DEUTERATION AND DEUTERIOOLIGOMERIZATION OF 1-ALKENES

被引：21

作者：

CAVALLO, L ^{[1
]}

GUERRA, G ^{[1
]}

VACATELLO, M ^{[1
]}

CORRADINI, P ^{[1
]}

机构：

[1] NAPLES UNIV,DIPARTMENTO CHIM,VIA MEZZOCANNONE 4,I-80134 NAPLES,ITALY

来源：

CHIRALITY | 1991年 / 3卷 / 04期

关键词：

CONFORMATIONAL ANALYSIS; NONBONDED INTERACTIONS; METALLOCENE METHYLALUMOXANE SYSTEMS; 1-PENTENE; STYRENE;

D O I：

10.1002/chir.530030414

中图分类号：

R914 [药物化学];

学科分类号：

100701 ;

摘要：

The enantioselectivity found in homogeneous isospecific Ziegler-Natta catalysts for the insertion of 1-alkenes in metal-deuterium or in metal-isobutyl bonds is discussed from a theoretical point of view. Nonbonded energy calculations, based on a model of the catalytic site previously proposed by us, indicate that the strong enantioselectivity found in the insertion of 1-alkenes in a metal-isobutyl bond is drastically reduced in the presence of a metal-deuterium bond. In particular, a weak enantioselectivity in favour of a monomer coordinated with the opposite chirality (lower for the case of 1-butene, higher for the case of styrene) is shown to occur in the latter case.

引用

页码：299 / 306

页数：8

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