PROTECTION AND POLYMERIZATION OF FUNCTIONAL MONOMERS .24. ANIONIC LIVING POLYMERIZATIONS OF 5-VINYL- AND 4-VINYL-1,3-BENZODIOXOLES

被引：14

作者：

ISHIZONE, T ^{[1
]}

MOCHIZUKI, A ^{[1
]}

HIRAO, A ^{[1
]}

NAKAHAMA, S ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,FAC ENGN,DEPT POLYMER CHEM,MEGURO KU,TOKYO 152,JAPAN

来源：

MACROMOLECULES | 1995年 / 28卷 / 11期

关键词：

D O I：

10.1021/ma00115a006

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Anionic polymerizations of 5-vinyl-1,3-benzodioxole (1) and 4-vinyl-1,3-benzodioxole (2) were carried out in tetrahydrofuran at -78 degrees C with oligo(alpha-methylstyryl)dilithium and -dipotassium. The vinyl polymerizations of 1 and 2 proceeded quantitatively within 30 min. The resulting polymers had predicted molecular weights and narrow molecular weight distributions (M(w)/M(n) < 1.1), indicating the living character of the polymerization systems. These living polymers were however found not to be completely stable either for a long time (24 h) or at an elevated temperature (-30 degrees C). Well-defined block copolymers, poly(1-b-styrene-b-1), poly(styrene-b-1-b-styrene), and poly(styrene-b-2), were successfully synthesized by the sequential polymerizations. The methylenedioxy linkage of the acetal moiety of poly(1) was completely cleaved with boron tribromide-dimethyl sulfide complex in 1,2-dichloroethane to give the unstable poly(4-vinylcatechol).

引用

页码：3787 / 3793

页数：7

共 31 条

[1] SECONDARY BETA-AMINOBENZAMIDE AND HETEROATOM DIRECTED LITHIATION IN THE SYNTHESIS OF 5,6-DIMETHOXYANTHRANILAMIDES AND RELATED-COMPOUNDS [J].