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Insoluble Polymer‐Supported Conjugate Bases of Thiazolium Ions As Catalysts in Organic Chemistry
Author(s) -
Castells J.,
Dunach E.,
Geijo F.,
Pujol F.,
Segura P. M.
Publication year - 1978
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197800050
Subject(s) - chemistry , benzoin , condensation , conjugate , chloride , cyanide , catalysis , polymer , organic chemistry , ion , polymer chemistry , mathematical analysis , physics , mathematics , thermodynamics
The synthetic possibilities of the generalized benzoin condensation are examined: benzoin condensation in its strict sense and closely related reactions, Michael type additions of aldehydes to activated double bonds, and oxidative benzoin condensation. In solid phase chemistry, comments are made on cyanide resins and details are given on the preparation of insoluble 5‐(2‐hydroxyethyl)‐4‐methyl‐3‐(polystyrylmethyl)thiazolium chloride and of 4‐methyl‐3‐(polystyrylmethyl)thiazolium chloride. Examples of the use of polymer thiazolium salts in the three types of reactions mentioned are presented and information on the stability of these salts is presented.