N-Halogen Compounds of Cyanamide Derivatives. VII. The Preparation and Amidination of 5-Ethoxy-Δ 4-1, 2, 4-thiadiazolines

T Fuchigami, T Nonaka, K Odo

Index: Fuchigami,T. et al. Bulletin of the Chemical Society of Japan, 1976 , vol. 49, p. 3170 - 3172

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Citation Number: 5

Abstract

2-Methoxycarbonimidoyl and 2-amidino-3-imino-5-ethoxy-Δ 4-1, 2, 4-thiadiazolines (I and II) were prepared by the reaction of potassium ethoxythiocarbonylcyanamide (III) with N-chloro compounds of O-methylisourea and guanidine. Δ 4-1, 2, 4-Thiadiazoline, I reacted with aliphatic amine to give 2-amidino-Δ 4, 2, 4-thiadiazolines and 1, 3, 5-triazines in the presence of both the free amines and amine hydrochlorides. The ring opening of Δ 4-1, 2, ...