Discrete yttrium(III) complexes as lactide polymerization catalysts

被引：139

作者：

Chamberlain, BM ^{[1
]}

Sun, YP ^{[1
]}

Hagadorn, JR ^{[1
]}

Hemmesch, EW ^{[1
]}

Young, VG ^{[1
]}

Pink, R ^{[1
]}

Hillmyer, MA ^{[1
]}

Tolman, WB ^{[1
]}

机构：

[1] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA

来源：

MACROMOLECULES | 1999年 / 32卷 / 07期

关键词：

D O I：

10.1021/ma990005k

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A set of novel yttrium complexes that display unprecedented coordination geometries for the ligands S-H3LMe, R-H3LiPr, and H3LMe is developed. These complexes are promising catalysts for the ring-opening polymerization of lactide. The demonstration of readily manipulated ligand effects on polymerization reactivity in these discrete, well-characterized complexes represents an important step in the development of highly selective lanthanide catalysts for the controlled synthesis of polylactide acid and other polyesters.

引用

页码：2400 / 2402

页数：3

共 26 条

[11] LEBORGNE A, 1995, MACROMOL RAPID COMM, V196, P955
[12] MULLER HM, 1993, ANGEW CHEM INT EDIT, V32, P477, DOI 10.1002/anie.199304771
[13] NEUWENHUIS J, 1992, CLIN MAT, V10, P59
[14] Controlled polymerization of cyclic esters. Structure of initiators and of active species related to the selectivity of initiation and propagation
Penczek, S
Duda, A
Libiszowski, J
[J]. MACROMOLECULAR SYMPOSIA, 1998, 128 : 241 - 254
[15] PREPARATION OF THE CHIRAL HEXADENTATE LIGAND N,N',N''-TRIS[(S)-2-HYDROXYPROPYL]-1,4,7-TRIAZACYCLONONANE AND PREPARATION AND CIRCULAR-DICHROISM SPECTRA OF ITS CO(III) COMPLEXES
ROBB, J
PEACOCK, RD
[J]. INORGANICA CHIMICA ACTA, 1986, 121 (01) : L15 - L17
[16] Ring-opening polymerization of D,L-lactide using rare-earth mu-oxo isopropoxides as initiator systems
Simic, V
Spassky, N
HubertPfalzgraf, LG
[J]. MACROMOLECULES, 1997, 30 (23) : 7338 - 7340
[17] Highly stereoelective polymerization of rac-(D,L)-lactide with a chiral Schiff's base/aluminium alkoxide initiator
Spassky, N
Wisniewski, M
Pluta, C
LeBorgne, A
[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS, 1996, 197 (09) : 2627 - 2637
[18] Kinetics and mechanism of L-lactide polymerization using two different yttrium alkoxides as initiators
Stevels, WM
Ankone, MJK
Dijkstra, PJ
Feijen, J
[J]. MACROMOLECULES, 1996, 29 (19) : 6132 - 6138
[19] WELL-DEFINED BLOCK-COPOLYMERS OF EPSILON-CAPROLACTONE AND L-LACTIDE USING Y-5(MU-O)((OPR)-PR-I)(13) AS AN INITIATOR
STEVELS, WM
ANKONE, MJK
DIJKSTRA, PL
FEIJEN, J
[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS, 1995, 196 (04) : 1153 - 1161
[20] A versatile and highly efficient catalyst system for the preparation of polyesters based on lanthanide tris(2,6-di-tert-butylphenolate)s and various alcohols
Stevels, WM
Ankone, MJK
Dijkstra, PJ
Feijen, J
[J]. MACROMOLECULES, 1996, 29 (09) : 3332 - 3333

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