Journal of Heterocyclic Chemistry

Hetarylpyrazoles. II. Reactions of pyrazol??l'??ylpyridines

MA Khan, AAA Pinto

Index: Khan, Misbahul Ain; Pinto, Alvaro Augusto Alves Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 9 - 14

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Citation Number: 16

Abstract

Abstract Pyrazol-l'-ylpyridines undergo electrophilic substitution reactions (bromination, chlorination, and nitration) preferentially in the pyrazole ring. There is some evidence of the mutual influence of the pyrazole and the pyridine ring on the reactivity of the system. Some modifications of the substituents were also carried out. A dihydro derivative of a new ring system, pyrazolo [1′, 2′-a] pyrido [2, 1-c][l, 2, 4] triazine was also obtained.