Heterocyclic betaines. Aza analogs of sesquifulvalene. 2. Azolium azolate inner salts: synthesis, reactivity, and structure of a 1: 1 adduct with dimethyl …

E Alcalde, I Dinares

Index: Alcalde, Ermitas; Dinares, Immaculada Journal of Organic Chemistry, 1991 , vol. 56, # 13 p. 4233 - 4238

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Citation Number: 10

Abstract

Fteaction of an activated 2-chloroamle with several N-alkylazoles afforded the N- ezolylazolium sal& deprotonation of which reedfa in a eeriea of the title mesomeric betaines 7 and 8. Their reactivity toward electrophiles and dipolarophilea under mild conditions reflecta the highly dipolar structures of 7 and 8. The thermal stability and dequatamization reactions of some of their corresponding N-azolylimidazolium and-pyrazolium salta have ...