The copolymerization of carbon dioxide and [2-(3,4-epoxycyclohexyl)ethyl]trimethoxysI lane catalyzed by (salen)CrCl. : Formation of a CO2 soluble polycarbonate

被引：50

作者：

Darensbourg, DJ ^{[1
]}

Rodgers, JL ^{[1
]}

Fang, CC ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

来源：

INORGANIC CHEMISTRY | 2003年 / 42卷 / 15期

关键词：

D O I：

10.1021/ic034363m

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The copolymerization of 2-(3,4-epoxycyclohexyl)ethyl-trimethoxysilane and carbon dioxide catalyzed by (salen)(CrCl)-Cl-III (H(2)salen = N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-ethylenediimine) with 2.5 equiv of N-Melm as cocatalyst affords a polycarbonate devoid of polyether linkages, along with only a trace quantity of cyclic carbonate. The presence of the trimethoxysilane functionality in the epoxide not only provided the reactant monomer and product copolymer high solubility in liquid carbon dioxide but also provided the ability to cross-link the copolymer and thereby greatly alter the physical properties of the thus formed polycarbonate. In addition, the enhanced solubility of the copolymer in liquid CO2 furnishes a ready means of removing the highly colored metal catalyst from the polycarbonate product.

引用

页码：4498 / 4500

页数：3

共 23 条

[1] High-activity, single-site catalysts for the alternating copolymerization of CO2 and propylene oxide [J].

Allen, SD ;

Moore, DR ;

Lobkovsky, EB ;

Coates, GW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (48) :14284-14285

[2] Polymer synthesis - Making polymers from carbon dioxide [J].

Beckman, EJ .

SCIENCE, 1999, 283 (5404) :946-947

[3] Single-site β-diiminate zinc catalysts for the alternating copolymerization of CO2 and epoxides:: Catalyst synthesis and unprecedented polymerization activity [J].

Cheng, M ;

Moore, DR ;

Reczek, JJ ;

Chamberlain, BM ;

Lobkovsky, EB ;

Coates, GW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (36) :8738-8749

[4] Enantiomerically-enriched organic reagents via polymer synthesis:: enantioselective copolymerization of cycloalkene oxides and CO2 using homogeneous, zinc-based catalysts [J].

Cheng, M ;

Darling, NA ;

Lobkovsky, EB ;

Coates, GW .

CHEMICAL COMMUNICATIONS, 2000, (20) :2007-2008

[5] Catalytic reactions involving C1 feedstocks:: New high-activity Zn(II)-based catalysts for the alternating copolymerization of carbon dioxide and epoxides [J].

Cheng, M ;

Lobkovsky, EB ;

Coates, GW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (42) :11018-11019

[6] Synthesis of novel multifunctional siloxane oligomers using sol-gel techniques and their photoinitiated cationic polymerization [J].

Crivello, JV ;

Mao, ZB .

CHEMISTRY OF MATERIALS, 1997, 9 (07) :1554-1561

[7] Carbon dioxide/epoxide coupling reactions utilizing lewis base adducts of zinc halides as catalysts. Cyclic carbonate versus polycarbonate production [J].

Darensbourg, DJ ;

Lewis, SJ ;

Rodgers, JL ;

Yarbrough, JC .

INORGANIC CHEMISTRY, 2003, 42 (02) :581-589

[8] Catalytic activity of a series of Zn(II) phenoxides for the copolymerization of epoxides and carbon dioxide [J].

Darensbourg, DJ ;

Holtcamp, MW ;

Struck, GE ;

Zimmer, MS ;

Niezgoda, SA ;

Rainey, P ;

Robertson, JB ;

Draper, JD ;

Reibenspies, JH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (01) :107-116

[9] Mechanistic aspects of the copolymerization reaction of carbon dioxide and epoxides, using a chiral salen chromium chloride catalyst [J].

Darensbourg, DJ ;

Yarbrough, JC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (22) :6335-6342

[10] CATALYTIC ACTIVITY OF ZINC(II) PHENOXIDES WHICH POSSESS READILY ACCESSIBLE COORDINATION SITES - COPOLYMERIZATION AND TERPOLYMERIZATION OF EPOXIDES AND CARBON-DIOXIDE [J].

DARENSBOURG, DJ ;

HOLTCAMP, MW .

MACROMOLECULES, 1995, 28 (22) :7577-7579

← 1 2 3 →