Ethanol → HCID 66713057, compound

Participants

Reaction Steps

365 mg of 2-(2,4-dimethoxy-benzyl)-4-hydroxy-7-phenoxy-1,2-dihydro-isoquinoline-3-carboxylic acid ethyl ester was dissolved in 7.9 ml of dichloromethane. To the solution was added 92 μL of thionyl chloride. The reaction was stirred at room temperature for 6.5 h, and then 500 μL of ethanol was added and the reaction stirred for an additional 10 min. The mixture was partitioned between ethyl acetate and sodium bicarbonate. The organic fraction was successively washed with 0.5 M HCl, water, brine; dried over anhydrous sodium sulfate, and concentrated to 468 mg of a yellow oil. The oil was purified by flash chromatography on silica gel, eluting with a gradient of 15-50% ethyl acetate in hexanes, to produce 232 mg of crude product, which was crystallized from ether and hexanes to give 193 mg of off-white solid; MS (+) m/z 310.08 (m+1).

Provenance & Evidence