RING-OPENING CLOSING ALTERNATING COPOLYMERIZATION OF CYCLIC PHOSPHONITES WITH DIALDEHYDES

被引：6

作者：

KOBAYASHI, S ^{[1
]}

LUNDMARK, S ^{[1
]}

KADOKAWA, J ^{[1
]}

ALBERTSSON, AC ^{[1
]}

机构：

[1] ROYAL INST TECHNOL,DEPT POLYMER TECHNOL,S-10044 STOCKHOLM 70,SWEDEN

来源：

MACROMOLECULES | 1992年 / 25卷 / 22期

关键词：

D O I：

10.1021/ma00048a002

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The present paper describes the ring-opening-closing alternating copolymerization (ROCAC) of four cyclic phosphonites (1) with four dialdehydes (2) including aliphatic and aromatic dialdehydes. The reaction of a 1:1 monomer feed ratio proceeded without any added catalyst to give an alternating copolymer 3 involving ring opening of 1 and ring closing of 2. The structure of copolymer 3 was determined by H-1, C-13, and P-31 NMR and IR spectroscopies as well as elemental analysis. The copolymerization is reasonably explained by a mechanism of propagation via zwitterion intermediates. The electrophilic reactivity of a carbonyl carbon in 2a and 2b toward monomer 1a was quantitatively examined.

引用

页码：5867 / 5872

页数：6

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