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Cesium fluoride‐mediated synthesis of aromatic polysulfides from aromatic dithiols and activated aromatic dihalides
Author(s) -
Imai Yoshio,
Yamanaka Kazuhiro,
Ishikawa Hironobu,
Kakimoto Masaaki
Publication year - 1999
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/(sici)1521-3935(19990101)200:1<95::aid-macp95>3.0.co;2-m
Subject(s) - chemistry , fluoride , potassium carbonate , condensation polymer , potassium fluoride , sulfone , polymer chemistry , caesium , aromaticity , electrophilic aromatic substitution , organic chemistry , polymer , inorganic chemistry , molecule
The solution polycondensation of aromatic dithiols with activated aromatic dihalides like bis(4‐fluorophenyl) sulfone with use of cesium fluoride as a base in polar aprotic solvents readily affords aromatic polysulfides having inherent viscosities as high as 1.0 dL/g. The polycondensation proceeds under essentially neutral and milder reaction conditions compared with the conventional method using potassium carbonate and with the cesium fluoride‐assisted synthesis of aromatic polyethers as well.