Sodium Bicarbonate → HCID 67197212, compound

Participants

Reaction Steps

A mixture of 400 mg of 1-[2-(4-chloro-2,5-difluorophenyl)-6,6-dioxido-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl]piperidin-4-one, 10 ml of methylene chloride, 65 μl of aminoethanol, and two drops of acetic acid was stirred at ambient temperature for 1 hour, here was then added 617 mg of sodium triacetoxyborohydride, and the mixture was stirred at ambient temperature for 3 hours. Saturated aqueous sodium bicarbonate was added to the reaction mixture, and the resultant mixture was extracted with chloroform-THF mixed solvent. The organic phase obtained was washed with brine and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The residue obtained was dissolved in THF-MeOH, here was added 4M HCl-dioxane solution, the solution was concentrated under reduced pressure, and the residue was recrystallized from EtOH-acetonitrile to yield 426 mg of 2-({1-[2-(4-chloro-2,5-difluorophenyl)-6,6-dioxido-5,7-dihydrothieno[3,4-d]pyrimidin-4-yl]piperidin-4-yl}amino)ethanol dihydrochloride.

Provenance & Evidence