NICKEL(0)-CATALYZED CYCLOADDITION COPOLYMERIZATION OF ETHER DIYNES WITH CARBON-DIOXIDE TO POLY(2-PYRONE)S

被引：12

作者：

TSUDA, T ^{[1
]}

YASUKAWA, H ^{[1
]}

KOMORI, K ^{[1
]}

机构：

[1] KYOTO UNIV,FAC ENGN,DEPT SYNTHET CHEM,KYOTO 60601,JAPAN

来源：

MACROMOLECULES | 1995年 / 28卷 / 05期

关键词：

D O I：

10.1021/ma00109a004

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nickel(0)-catalyzed cycloaddition copolymerization of CO2 with five ether diynes (RC=C(CH2)(l)O(CH2)(m)O(CH2)(l)C=CR, l = 2, m = 4, R = Me (1a), l = 2, m = 4, R = Et (1b), l = 2, m = 4, R = n-Pr (1c), l = 1, m = 4, R = Me (1d), and l = 1, m = 2, R = Et (1e)) was studied. The corresponding five poly(2-pyrone)s with molecular weights of 3300-29 100 were obtained in 45-88% yield in a THF/MeCN solvent at 110 degrees C. Ternary copolymerization of CO2 with equimolar amounts of 1a-c and EtC=C(CH2)(6)C=CEt (4) showed that an effect of three alkyl substituents (R = Me, Et, and n-Pr) on the copolymerizability of 1a-c with CO2 is mutually similar. The 1c/n-PrC=C(CH2)(10)C=C-n-Pr(6)/CO2 and 1e/4/CO2 ternary copolymerizations gave relative copolymerizabilities of 0.97 and 2.0, respectively, which indicated that an electron-withdrawing effect of an ether oxygen atom on the copolymerizability of a terminal C=C bond of a copolymer operates through one methylene group to increase the ether diyne copolymerizability, while such an electronic effect of the ether oxygen atom does not act through two methylene groups.

引用

页码：1356 / 1359

页数：4

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