Sodium Hydroxide → HCID 56966935, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of ethyl 4,4-dimethyl-2-(2-(pyridine-3-sulfonamido)phenyl)-1,2,3,4-tetrahydroquinoline-6-carboxylate (crude 0.62 mmol) in ethanol was added a solution of lithium hydroxide monohydrate (129 mg, 3.08 mmol) and sodium hydroxide (50 mg, 1.23 mmol) in water (1.5 mL) at room temperature. The reaction mixture was stirred at 85° C. overnight. The reaction mixture was concentrated in vacuo. The residue was diluted with water, adjusted pH=3˜4 by 1M aqueous hydrochloric acid, extracted with ethyl acetate. The combined organic layer was washed by brine, dried over anhydrous Sodium sulfate, concentrated in vacuo. The residue was purified by HPLC to give 4,4-dimethyl-2-[2-(pyridine-3-sulfonylamino)-phenyl]-1,2,3,4-tetrahydro-quinoline-6-carboxylic acid. LC/MS m/e obsd. (ESI+) [(M+H)+] 438.20.

Provenance & Evidence