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A convenient synthesis of macroporous polymer‐supported supernucleophilic reagent and linear macromolecules
Author(s) -
Huang JiTao,
Zheng SiHua,
Zhang JiaQi,
Sun JingWu
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(20000124)75:4<593::aid-app16>3.0.co;2-f
Subject(s) - piperazine , epichlorohydrin , catalysis , polymer , reagent , linear polymer , polymer chemistry , chemistry , pyridine , copolymer , macromolecule , materials science , organic chemistry , biochemistry
N , N ′‐Bis(4‐pyridinyl)piperazine and N ‐(4‐pyridinyl)piperazine have been prepared by treatment of piperazine with 4‐chloropyridine. N , N ′‐Bis(4‐pyridinyl)piperazine ( bis ‐DMAP) is similar to a couple of 4‐( N , N ‐dimethylamino)pyridine (DMAP). N ‐(4‐Pyridinyl)piperazine as reactive group can be linked onto the macroporous polymeric carrier producing a polymer‐bound catalyst. A linear epoxy polymer containing the supernucleophilic functional groups have been synthesized by reaction of epichlorohydrin and 4‐aminopyridine. The linear polymeric catalysts have been braced by the macroporous resin to obtain a polymer‐supported linear polymeric catalyst. It is found that catalytic activity of bis ‐DMAP approaches that of DMAP. The activity of the polymer‐supported linear polymeric catalyst is higher than that of the polymer‐bound catalyst in the acetylation of tert ‐butyl alcohol, as monitored by gas–liquid chromatography. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 593–597, 2000