Zwitterionic bis(phenolate) amine lanthanide complexes for the ring-opening polymerisation of cyclic esters

被引：102

作者：

Dyer, Hellen E. ^{[1
]}

Huijser, Saskia ^{[2
]}

Schwarz, Andrew D. ^{[1
]}

Wang, Chao ^{[1
]}

Duchateau, Robbert ^{[2
]}

Mountford, Philip ^{[1
]}

机构：

[1] Univ Oxford, Chem Res Lab, Oxford OX1 3TA, England

[2] Eindhoven Univ Technol, Dept Chem Engn & Chem, Polymer Chem Lab, NL-5600 MB Eindhoven, Netherlands

来源：

DALTON TRANSACTIONS | 2008年 / 01期

关键词：

D O I：

10.1039/b714583g

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of Sm{N(SiMe3)(2)}(3) with the bis(phenol) amines H2O2NR (H2O2NR = RCH2CH2N(2-HO-3,5-C6H2t Bu-2)(2); R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2NR)- (HO2NR). For R= OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R = Me.

引用

收藏

页码：32 / 35

页数：4

相关论文

共 25 条

[1] Ring-opening polymerization of lactide with group 3 metal complexes supported by dianionic alkoxy-amino-bisphenolate ligands: Combining high activity, productivity, and selectivity [J].

Amgoune, A ;

Thomas, CM ;

Roisnel, T ;

Carpentier, JF .

CHEMISTRY-A EUROPEAN JOURNAL, 2006, 12 (01) :169-179

[2] Highly efficient dynamic kinetic resolution of azlactones by urea-based bifunctional organocatalysts [J].

Berkessel, A ;

Cleemann, F ;

Mukherjee, S ;

Müller, TN ;

Lex, J .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (05) :807-811

[3] Lanthanide borohydride complexes supported by diaminobis(phenoxide) ligands for the polymerization of ∈-caprolactone and L- and rac-lactide [J].

Bonnet, F ;

Cowley, AR ;

Mountford, P .

INORGANIC CHEMISTRY, 2005, 44 (24) :9046-9055

[4] Lanthanide mono(borohydride) complexes of diamide-diamine donor ligands: novel single site catalysts for the polymerisation of methyl methacrylate [J].

Bonnet, F ;

Hillier, AC ;

Collins, A ;

Dubberley, SR ;

Mountford, P .

DALTON TRANSACTIONS, 2005, (03) :421-423

[5] Group 4 complexes with aminebisphenolate ligands and their application for the ring opening polymerization of cyclic esters [J].

Chmura, Amanda J. ;

Davidson, Matthew G. ;

Jones, Matthew D. ;

Lunn, Matthew D. ;

Mahon, Mary F. ;

Johnson, Anthony F. ;

Khunkamchoo, Prasert ;

Roberts, Sian L. ;

Wong, Stephen S. F. .

MACROMOLECULES, 2006, 39 (21) :7250-7257

[6] Zwitterionic polymerization of lactide to cyclic poly(lactide) by using N-heterocyclic carbene organocatalysts [J].

Culkin, Darcy A. ;

Jeong, Wonhee ;

Csihony, Szilard ;

Gomez, Enrique D. ;

Balsara, Nitash R. ;

Hedrick, James L. ;

Waymouth, Robert M. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (15) :2627-2630

[7] Isolation and characterisation of transition and main group metal complexes supported by hydrogen-bonded zwitterionic polyphenolic ligands [J].

Davidson, MG ;

Doherty, CL ;

Johnson, AL ;

Mahon, MF .

CHEMICAL COMMUNICATIONS, 2003, (15) :1832-1833

[8] Controlled ring-opening polymerization of lactide and glycolide [J].

Dechy-Cabaret, O ;

Martin-Vaca, B ;

Bourissou, D .

CHEMICAL REVIEWS, 2004, 104 (12) :6147-6176

[9] Thiourea-based bifunctional organocatalysis: Supramolecular recognition for living polymerization [J].

Dove, AP ;

Pratt, RC ;

Lohmeijer, BGG ;

Waymouth, RM ;

Hedrick, JL .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (40) :13798-13799

[10]

Drumright RE, 2000, ADV MATER, V12, P1841, DOI 10.1002/1521-4095(200012)12:23<1841::AID-ADMA1841>3.0.CO