1-Bromopropane → HCID 54187179, compound

Participants

Reaction Steps

1.74 ml of N-ethyldiisopropylamine and 0.55 ml (6 mmol) of 1-bromopropane were added to a solution of 0.500 g (1.52 mmol) of (S)-1-(5-aminomethyl-1,2,4-oxadiazol-3-yl)-I 1,11a-dihydro-8H, 10H-azeto[1,2-a]imidazo[5,1-c]thieno[3,2-e][1,4]diazepin-8-one in 15 ml of dimethylformamide and the mixture was stirred at 70° for 12 hours. The dimethylformamide was evaporated and the residue was partitioned between methylene chloride and 2N sodium carbonate solution. The aqueous phase was extracted twice with methylene chloride and the organic phases were dried with sodium sulfate, filtered and evaporated. Chromatography (silica gel, ethyl acetate/methanol 20:1) yielded 0.350 g (55%) of (S)-1-(5-dipropylaminomethyl-1,2,4-oxadiazol-3-yl)-11,11a-dihydro-8H, 10H-azeto[1,2-a]imidazo[5,1-c]thieno[3,2-e][1,4]diazepin-8-one as a colourless foam, Rf=0.44 (silica gel, ethyl acetate/methanol 20:1).

Provenance & Evidence