Studies on the mechanism of amine-catalyzed cyclic oligomeric carbonate formation

Autor:	Eugene Pauling Boden, Daniel J. Brunelle
Rok vydání:	1992
Předmět:	chemistry.chemical_classification Polymers and Plastics Bisphenol Organic Chemistry Salt (chemistry) Condensed Matter Physics Condensation reaction Oligomer chemistry.chemical_compound Hydrolysis chemistry Polymer chemistry Materials Chemistry Organic chemistry Carbonate Amine gas treating Ammonium
Zdroj:	Makromolekulare Chemie. Macromolecular Symposia. :397-412
ISSN:	0258-0322
DOI:	10.1002/masy.19920540130
Popis:	A mechanism for the selective formation of cyclic oligomeric carbonates via triethylamine-catalyzed, pseudo-high dilution hydrolysis/-condensation of bisphenol A-bischloroformate is proposed. The mechanism is based on results of model and cyclization reactions using amines of various structure. Intermediacy of an acyl ammonium salt is invoked for both hydrolysis and condensation reactions. An oligomeric carbonate with a phenoxide on one end and an acyl ammonium salt on the other end is proposed as the immediate precursor to a cyclic oligomer.
Databáze:	OpenAIRE
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