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Polyesterification in Solution with a New Tosyl Chloride/ N ‐Piperidinoformamide/Pyridine Condensing Agent
Author(s) -
Higashi Fukuji,
Haramoto Shuhji,
Yashio Masahiro
Publication year - 2002
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20020101)203:2<309::aid-macp309>3.0.co;2-b
Subject(s) - pyridine , chemistry , tosyl , polymer chemistry , polyester , chloride , organic chemistry , dicarboxylic acid
A new condensing agent comprised of tosyl chloride (TsCl) and N ‐piperidinoformamide (NPF) in pyridine was very effective for the preparation of polyesters of aromatic dicarboxylic acids and aliphatic and aromatic diols with the highest molecular weight reported to date obtained by the solution reaction. The reaction yielded the most favorable results using about 0.3 equivalents of NPF with respect to the carboxyl groups and by dropwise addition of the diols over a period of about 20 min.