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Preparation of polyaryl esters by a new direct polycondensation reaction with arylsulfonyl chlorides in pyridine

โœ Scribed by Higashi, Fukuji ;Akiyama, Naoki ;Koyama, Tsugio


Publisher
John Wiley and Sons
Year
1983
Weight
391 KB
Volume
21
Category
Article
ISSN
0360-6376

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## Abstract 4,4โ€ฒโ€Hexafluoroisopropylideneโ€2,2โ€bis(phthalic acid anhydride) (1) was treated with Lโ€methionine (2) in acetic acid and the resulting 4,4โ€ฒโ€(hexafluoroisopropylidene)โ€__N,N__โ€ฒโ€bis(phthaloylโ€Lโ€methionine) diacid (4) was obtained in high yields. The direct polycondensation reaction of this