C??phosphorylation of 1, 2, 4??triazoles with phosphorus (III) halides. Synthesis of 4, 5??dihydrobenzo [e][1, 2, 4] triazolo [5, 1??c][1, 4, 2] diazaphosphinine derivatives

EV Zarudnitskii, VV Ivanov, AA Yurchenko…

Index: Zarudnitskii, Evgenij V.; Ivanov, Vladimir V.; Yurchenko, Alexandr A.; Pinchuk, Alexandr M.; Tolmachev, Andrej A. Heteroatom Chemistry, 2002 , vol. 13, # 2 p. 146 - 152

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Citation Number: 22

Abstract

Abstract Phosphorylation of 4-and 1-substituted 1, 2, 4-triazoles with PCl 3, PhPCl 2, Ph 2 PCl, and (Et 2 N) 2 PCl was carried out. A novel phosphorus-containing condensed heterocyclic system (18, 23) was constructed by the reactions of 2-(1H-1, 2, 4-triazol-1-yl)-1- (4-chlorophenylcarboxamido)-5-trifluoromethylbenzene with PBr 3 and PhPBr 2. Treatment of the bromophosphonite 18 with an excess of morpholine in the presence of sulfur ...