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Metalloporphyrin catalysts for living and immortal polymerizations
Author(s) -
Inoue Shohei,
Sugimoto Hiroshi,
Aida Takuzo
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961010104
Subject(s) - methacrylonitrile , lewis acids and bases , polymerization , polymer chemistry , steric effects , monomer , chemistry , methyl methacrylate , porphyrin , catalysis , methacrylate , living anionic polymerization , copolymer , organic chemistry , photochemistry , anionic addition polymerization , polymer , styrene
The living polymerization of methyl methacrylate with aluminium porphyrin ( 1 ) proceeded dramatically rapidly at room temperature in the presence of sterically crowded organoaluminium compounds such as methylaluminium ortho ‐substituted diphenolates ( 3a − 3g ), bis(triphenylmethanolate) ( 4a ), and triphenylaluminium, where undesired reaction between the growing species and the Lewis acids was sterically suppressed. On the basis of this Lewis acid ‐ assisted high‐speed living polymerization, various monomers such as ethyl, propyl, butyl, and dodecyl methacrylates, methacrylonitrile, and 1,2‐epoxypropane were polymerized very rapidly with the aluminium porphyrin ‐ Lewis acid systems.