دراسات في تفاعلات 3- كلوربنزو [b] ثايوفين -2- حامض كاربوكسيلك هيدرازايد

Reacfron oI ·3-chlorobenzo[b ]thiop_hene-2-carboxylic acid hydrazide ( I) . with carbon ·disulfide jn _alcoholic potassium · hydroxide - hydroxide le-ad to the formation of triazole (2). The hydrazide (I) ·and triazole (2) subsequently react with various .aldehydes and ketones to form Schiffs bases (3 -9). On other hand , (eactions of Schiffs bases with anhydrous acetic ac_id give -· new benzo[b]thiophenes containing oxadiazole moiety _( 10-3). Their structures have been verified on the bases of some spectral prop€rties .