Toshio Fuchigami, Tsutomu Nonaka, Keijiro Odo
1976
Citations
0
Influential Citations
4
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
2-Methoxycarbonimidoyl and 2-amidino-3-imino-5-ethoxy-Δ4-1,2,4-thiadiazolines (I and II) were prepared by the reaction of potassium ethoxythiocarbonylcyanamide (III) with N-chloro compounds of O-methylisourea and guanidine. Δ4-1,2,4-Thiadiazoline, I reacted with aliphatic amine to give 2-amidino-Δ4,2,4-thiadiazolines and 1,3,5-triazines in the presence of both the free amines and amine hydrochlorides. The ring opening of Δ4-1,2,4-thiadiazoline, which finally results in the formation of 1,3,5-triazine, was found to be catalyzed mainly by a base and also by an acid.