الفهرس 
acknowledgementOnly 14 pages are availabe for public view
 |  | from | 210 |  |  |
| | | from | 210 | | |
Abstract
Alkylation of 4-anilino-5-pheny1-4h-1,2,4-triazole-3-thiol (1) with halo compounds namely: chloroacetamide , bromomalononitrile and ethy1 chloroacetate gave the corresponding sulfides 2- 7 ,respectively. compounds 6and7 underwent cyclization to afford triazolo(3,4-b) thiadiazines 8 and9 , respectively . reaction of compound 1 with hydrazine hydrate, carbondisulfide, ethy1 orthoformate, lawessons reagent (lr), ethy1 chloroformate and pheny1 isothiocynate afforded compounds 10-15, respectively. compounds 14 and 15 were cyclized to give compounds 16 and 17,respectively. thiation of compound 16 by usinglawessons reagent (lr)in xylene afforded the corresponding triazolo(3,4-b) thiadiazole - 6-thione 11.