Synthesis of 3??(2??chloro??5??nitroanilino and 4??nitroanilino)??1??(2, 4, 6??trichlorophenyl)??2??pyrazolin??5??ones

CK Kim, F Debellis, CA Maggiulli

文献索引：Kim, Chang-Kyu; Debellis, Francesco; Maggiulli, Cataldo A. Journal of Heterocyclic Chemistry, 1987 , vol. 24, p. 325 - 328

全文：HTML全文

被引用次数: 1

摘要

Abstract A new synthesis of 3-anilino-1-aryl-2-pyrazolin-5-ones in which the pyrazolinone ring is built via N [BOND] N bond formation is described. 2-Cyano-2′, 4′, 6′- trichloroacetanilide 1 was converted to imino ether hydrochloride 2 which was reacted with anilines in methanol to produce N-arylimino ether 3a, b. Reaction of these N-arylimino ethers with hydroxylamine gave N-arylamidoximes 4a, b. An 1, 2, 4-oxadiazol-5-one 6a ...