On Glucosyl Thioureides. Part-IV. Synthesis of 3-Aryl-2,6-diphenylimino-4-5 tetra-O-acetyl-D-glucopyranosyl-5,6-dihydro-1,3,5-thiacliazine (Hysrochlorides)

Department of Chemistry, Nagpur University, Nagpur-440 010 Manuscript received 12 July 1982, revised 10 April 1984, accepted 75 August 1984 Certain 3-aryl-2,6-diphenylimino-4-S-tetra-O-acetyl-D-glucopyranosyl-5,6- dihydro­l,3,5-thiadiazines (hydrochlorides) have been prepared by the interaction of phenyliso­cyanodichloride and 2-S-tetra-O-acetyl-D-glucopyranosyl-1-aryl-5-phenyl-2,4-isodithio­biurets. The identities of these products have been established on the basis of usual chemical transformations, ir, and polarlmetry. All the attempts to Isomerize these products into the related 1,3,5-triazines (IV or V) have been unfruitful