... Communications to the Editor Chem. Pharm. Bull. 35( 9 )3952-3954(1987) A FACILE SYNTHESIS OF HALO-1,2,3-TRIAZINES Terumitsu Kaihoh, Takashi Itoh, Akio Ohsawa,* Mamiko Okada, Chikako Kawabata, and Hiroshi Igeta School of Pharmaceutical Sciences, Showa University, Hatanodai, Shinagawa-ku, Tokyo 142, Japan Halo-1,2,3-triazines (1 and 3) were synthesized by treating 1-aminopyrazoles (2) with chlorine and bromine, without isolating ...