Chemistry Letters

SYNTHESIS OF 2, 2, 2-TRISUBSTITUTED 5-TRIFLU0R0METHYL-Δ 4-1, 3, 4, 2-OXADIAZAPHOSPHOLINES AND THEIR POTENTIALITY AS PRECURSORS OF …

K Tanaka, T Igarashi, K Mitsuhashi

Index: Tanaka, Kiyoshi; Igarashi, Toh-ru; Mitsuhashi, Keiryo Chemistry Letters, 1983 , p. 507 - 510

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Citation Number: 4

Abstract

N′-Phenyl-and methyltrifluoroacetohydrazides react with phosphorus pentachloride to give the corresponding 2, 2, 2-trichloro-3-phenyl-and methyl-Δ 4-1, 3, 4, 2-oxadiazaphospholines , from which various 2, 2, 2-trisubstituted derivatives are further synthesized. Heating 3- phenyl-2, 2, 2-tris (p-tolyloxy) analog with an excess of styrene affords 1, 5-diphenyl-3- trifluoromethyl-2-pyrazoline, which indicates that the phospholine behaves as a precursor ...