Synthesis of some vinyl-substituted pyrylium salts and their intermediates

Autor:	C. C. Petropoulos
Rok vydání:	1972
Předmět:	chemistry.chemical_compound Monomer chemistry General Engineering Copolymer Organic chemistry ETHANOLAMINE DERIVATIVES Methacrylate Acetophenone
Zdroj:	Journal of Polymer Science Part A-1: Polymer Chemistry. 10:957-974
ISSN:	1542-9350 0449-296X
DOI:	10.1002/pol.1972.150100401
Popis:	The preparation of vinyl-substituted pyrylium salts and their intermediates is described. These monomers and intermediates have been derived from syntheses based on p-2-hydroxyethoxybenzaldehyde and 4-methoxypyrylium salts. Treatment of the hydroxybenzaldehyde with acetophenone gives a hydroxypyrylium intermediate which, when methacrylated, gives a pyrylium methacrylate. Methacrylation of the hydroxy-benzyldehyde followed by condensation with methylpyrylium salts gives styryl-pyrylium methacrylates. Displacement of the methoxy group in methoxypyrylium salts with ethanolamine derivatives followed by methacrylation yields a series of aminopyrylium methacrylates. The preparation of a divinylpyrylium urethane and a pyrylium-type copolymer is also described.
Databáze:	OpenAIRE
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