Potassium Iodide → HCID 19881143, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 4.1 g of 4-(4-chlorobutyl)-2,3-dihydrothieno[3,2-f]-1,4-thiazepin-5(4H)-one 1,1-dioxide in 80 ml of a mixed solvent of N,N-dimethylformamide and toluene (1:1) were added 3.2 g of N-(2-pyrimidinyl)piperazine dihydrochloride, 3.8 g of potassium carbonate and 2.3 g of potassium iodide and the mixture was stirred for 3 hours at 90° C. Then, the mixture was poured into water and extracted with ethyl acetate. The extract was washed with water, dried over magnesium sulfate and the solvent was distilled off. The resulting residue was chromatographed on a silica gel and eluted using chloroform and methanol (95:5) as an eluent. The resulting crystals were recrystallized from ethanol to give 3.0 g of 2,3-dihydro-4-[4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl]thieno[3,2-f]-1,4-thiazepin-5(4H)-one 1,1-dioxide as white crystals, melting at 161°-163° C.

Provenance & Evidence