Hydrochloric Acid → HCID 16656820, compound

Participants

Reaction Steps

To a solution of 5-methoxycarbonyl-3-[2-chloro-5-(3,4-dihydroquinolin-1(2H)-ylsulfonyl)phenyl]thieno[3,4-d]-pyrimidine-2,4(1H,3H)-dione (0.2 g) in tetrahydrofuran (4 mL) was added diisobutylaluminum hydride (1.01 mol/L toluene solution, 1.5 mL) under ice-cooling, and the mixture was stirred for 1 hour. To the reaction mixture was added ethyl acetate, and the mixture was stirred for 10minutes. To the mixture was added 1 mol/L hydrochloric acid, and the resulting mixture was extracted with ethyl acetate. The extract was washed with brine and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=1/1) to give the title compound (0.11 g).

Provenance & Evidence