Sodium Bicarbonate → HCID 22329310, compound

Participants

Reaction Conditions

Reaction Steps

In ethyl acetate (28 ml) was dissolved tert-butyl 7-[4-(2-butoxyethoxy)phenyl]-1-(2-methoxyethyl)-2,3-dihydro-1-benzazepine-4-carboxylate (1.4 g). To the solution was added 4N hydrochloric acid/ethyl acetate (14 ml) at room temperature, and the mixture was stirred at 60° C. for 2 hours. After cooled to room temperature, an aqueous saturated solution of sodium hydrogen carbonate was added to adjust pH to approximate 5. The solvent was removed under reduced pressure, and the resulting residue was washed with hexane/ethyl acetate (=6/1) to give 7-[4-(2-butoxyethoxy)phenyl]-1-(2-ethoxyethyl)-2,3-dihydro-1-benzazepine-4-carboxylic acid (0.61 g, 49%).

Provenance & Evidence