... Chem., 67, 302 (1955). (4) For a current review on the synthesis and chemistry of 1,2,4-thiadi- azoles see F. Kuraer, Aduun. Helerocycl. ... (22) (a) N. Kharasch, “Organic Sulfur Compounds,” Vol. ... Page 5. SYNTHESIS OF 3-HALO-1,2,4-THIADIAZOLES J. Org. Chem., Vol. 38,