Etude des reactions des diazoderives avec les cycloimmonium ylures-I : Action des sels de diazonium sur quelques pyridinium - ylures |
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Authors: | M Petrovanu G Surpateanu M Bourceanu V Barboiu |
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Institution: | 1. Institut de Chimie Macromoléculaire “P.Poni” Jassy Aleea Ghica Vodá, 41 A - Roumanie |
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Abstract: | The synthesis of cycloimmonium salts of the type , and the corresponding cycloimmonium ylides , are reported. In the reaction with diazonium salts , the pyridinium monosubstituted carbanion ylides , give the pyridinium disubstituted carbanion ylides – . These are new types of isolable stable ylides. The synthesis involves the formation “in situ” of ylides , which are bonded by their nucleophile ylide carbon atom to the nitrogen atom in diazonium salts. The intermediat formation of cycloimmonium salts – must be accepted. The structures of all compounds presented in this paper have been established by using elementary analysis, IR and 1H-RMN spectra. |
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