Sodium Hydroxide → HCID 68473089, compound

Participants

Reaction Steps

33 mg of methyl 7-methyl-1-oxo-2-(1-propylbutyl)-1,2,3,4-tetrahydroisoquinoline-5-carboxylate are dissolved in 1 cm3 of dioxane at a temperature close to 20° C. 0.3 cm3 of a 1N aqueous solution of sodium hydroxide is added, then the reaction mixture is heated at a temperature close to 60° C. for 1 h. The mixture is then concentrated to dryness under reduced pressure (5 kPa), taken up by 10 cm3 of water and 15 cm3 of ethyl ether. The aqueous phase is decanted, washed with 10 cm3 of ethyl ether, acidified with 0.3 cm3 of a 2N aqueous solution of hydrochloric acid and taken up with 10 cm3 of dichloromethane. The organic phase is extracted, dried over anhydrous magnesium sulfate, filtered and concentrated to dryness under reduced pressure (5 kPa). 33.5 mg of 7-methyl-1-oxo-2-(1-propylbutyl)-1,2,3,4-tetrahydroisoquinoline-5-carboxylic acid are obtained in the form of a colorless lacquer.

Provenance & Evidence