Ammonia → (+/-)-9-(3-Carbamoyl-3-hydroxy-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene-2-carboxylic acid amide

Participants

Reaction Conditions

Reaction Steps

similar to General Procedure M, A solution of methyl 4-(2-carbamoyl-9-fluoro-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-10-yl)-2-hydroxy-2-methylbut-3-ynoate (300 mg, 0.80 mmol, 1.00 equiv) (prepared by reaction of methyl 2-hydroxy-2-methylbut-3-ynoate and 10-bromo-9-fluoro-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine-2-carboxamide in methanol saturated with ammonia (40 mL) was stirred for 12 h at 25° C. The resulting mixture was concentrated under vacuum. The residue was washed with 3×10 mL of methanol and 2×5 mL of CH3CN. The solid was dried in an oven under reduced pressure. This resulted in 43 mg (15%) of the title compound as a brown solid.

Provenance & Evidence