Triethylamine → HCID 22000420, compound

Participants

Reaction Steps

9-Fluoro-5,6-dihydro-4H-benzo[6,7]cyclohepta[d][1,3]-thiazol-2-amine (150 mg, 0.640 mmole) was dissolved in 3 ml of dry THF, mixed with triethylamine (135 μl, 0.970 mmole), cooled in an ice bath and treated with 5-bromovaleryl chloride (90 μl, 0.67 mmole). The mixture was stirred at room temperature for 3 days. TLC analysis of the mixture showed 50% completion. Hence, a catalytic amount of DMAP was added and stirring was continued for 16 hours. There was no change in the TLC of the mixture. 5-Bromovaleryl chloride (90 μl) was added and stirred for 3 days. The reaction mixture was partitioned between ethyl acetate and saturated sodium carbonate and the aqueous phase separated and extracted with 2×3 ml ethyl acetate. The combined ethyl acetate extracts were washed with saturated sodium chloride solution, concentrated and chromatographed (silica, Ethyl acetate/hexanes) to give 179 mg of the desired product as a white foam (70%): 397, 399 (ESMS, MH+).

Provenance & Evidence