Asymmetric cycloaddition of CO2 and an epoxide using recyclable bifunctional polymeric Co(III) salen complexes under mild conditions

被引：39

作者：

Roy, Tamal ^{[1
]}

Kureshy, Rukhsana I. ^{[1
,2
]}

Khan, Noor-ul H. ^{[1
,2
]}

Abdi, Sayed H. R. ^{[1
,2
]}

Bajaj, Hari C. ^{[1
,2
]}

机构：

[1] Cent Salt & Marine Chem Res Inst CSIR CSMCRI, Discipline Inorgan Mat & Catalysis, Bhavnagar 364021, Gujarat, India

[2] CSIR, CSMCRI, Acad Sci & Innovat Res AcSIR, Bhavnagar 364021, Gujarat, India

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2013年 / 3卷 / 10期

关键词：

CARBON-DIOXIDE; CYCLIC CARBONATES; PROPYLENE-OXIDE; KINETIC RESOLUTION; ORGANIC CARBONATES; TERMINAL EPOXIDES; CATALYST SYSTEMS; RACEMIC EPOXIDES; ENANTIOSELECTIVITY; COPOLYMERIZATION;

D O I：

10.1039/c3cy00325f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bifunctional polymeric Co(III) salen complexes 1a-g derived from (1R,2R)-(-)-1,2-diaminocyclohexane and a triazine-piperazine core were synthesized and screened for the asymmetric cycloaddition reaction of CO2 and an epoxide under mild conditions. A moderate K-rel value of 11.2 for the product propylene carbonate (ee = 74%) was obtained with catalyst 1e which does not require any external base as the co-catalyst. The polymeric Co(III)-CCl3COO (1e) was efficiently recycled 10 times without any significant loss in activity under the present reaction conditions.

引用

页码：2661 / 2667

页数：7

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