Alternating Copolymerization of CO2 and Cyclohexene Oxide by New Pyridylamidozinc(II) Catalysts

被引：14

作者：

D'Auria, Ilaria ^{[1
]}

D'Alterio, Massimo Christian ^{[1
,2
]}

Talarico, Giovanni ^{[2
]}

Pellecchia, Claudio ^{[1
]}

机构：

[1] Univ Salerno, Dipartimento Chim & Biol A Zambelli, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy

[2] Univ Federico II Napoli, Dipartimento Sci Chim, Complesso Monte St Angelo,Via Cintia 21, I-80126 Naples, Italy

来源：

MACROMOLECULES | 2018年 / 51卷 / 23期

关键词：

CARBON-DIOXIDE; ZINC CATALYSTS; POLYMERIZATION; COMPLEXES; EPOXIDES;

D O I：

10.1021/acs.macromol.8b01651

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Five new Zn(II) complexes bearing pyridylamido ligands with different substituents at the pyridine and at the amido moieties were synthesized and evaluated as catalysts for the alternating copolymerization of carbon dioxide and cyclohexene oxide. Polymers with carbonate linkages ranging between 86 and 99% and a slightly isotacticenriched structure were selectively obtained under a variety of reaction conditions, including 1 atm of CO2 pressure, without any cocatalyst. Some experimental and theoretical evidence suggested that different initiating species are involved in the catalytic cycle, including dimeric [(L-x)Zn(mu-OR)](2) and [(L-x)Zn(mu-O2COR)] complexes similar to those involved in the classical beta-diiminate Zn(II) catalysts.

引用

页码：9871 / 9877

页数：7

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