Well-defined calcium initiators for lactide polymerization

被引：354

作者：

Chisholm, MH ^{[1
]}

Gallucci, JC ^{[1
]}

Phomphrai, K ^{[1
]}

机构：

[1] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 21期

关键词：

D O I：

10.1021/ic0490730

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of monomeric amide or aryloxide complexes of the form LCaX, where L = CH[CMeNC6H3-2,6-Pr-2(i)]2, CH[CMeNC6H4-2-OMe](2), a bulky tris-pyrazolyl borate, Tp(iPr) or T p(tBu) or 9-BBN-pz(2) and X = N(SiMe3)(2) or OC6H3-2,6-Pr-2(i), has been prepared and characterized and investigated in the ring-opening polymerizations of lactide. The compounds (Tp(tBu))CaX in THF are shown to be highly active and stereoselective. The propylene oxide complex (Tp(tBu)) Ca(OC6H3-2,6-Pr-2(i)).(PO) has been isolated and structurally characterized (single-crystal X-ray) and shown to be inert to the polymerization of PO.

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页码：6717 / 6725

页数：9

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