New and improved routes to alkoxyamine initiators for controlled radical polymerisation

被引：0

作者：

Thiessen, Y ^{[1
]}

Wolff, T ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Phys Chem & Elektrochem, D-01062 Dresden, Germany

来源：

DESIGNED MONOMERS AND POLYMERS | 2005年 / 8卷 / 05期

关键词：

NMRP initiators; poly-4-vinylpyridine; ultrasound; nitroxide radicals; manganese(III)-acetate; alkoxyamine initiators; radical reactions; atom transfer radical addition (ATRA); samarium(II)iodide;

D O I：

暂无

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

O-substituted hydroxylamines were synthesized in almost quantitative yields using ultrasound and Mn(OAc)(3) (in substance or regenerated in situ by an oxidizing agent) as electron-transfer agent. Two novel synthetic methods for the synthesis of alkoxyamines from organic halides and stable nitroxide radicals are introduced. One of them utilises cyancobalamine (vitamine B-12), the other SmI2 as catalyst and magnesium metal as reductive agent. The yields are good for the first method and excellent for the second. The initiators were tested in controlled radical polymerisation of styrene, methylmethacrylate and 4-vinylpyridine.

引用

页码：397 / 407

页数：11

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