Water → 3,4-dihydro-7-methoxy-2-(3-pyridylmethyl)-1 (2H)-isoquinolinone

Participants

Reaction Steps

To a suspension of 3.70 g of sodium hydride (about 60%) in 80 ml of dimethylformamide was added portionwise 5.30 g of 3-chloromethylpyridine hydrochloride under ice cooling. The mixture was stirred under ice cooling for 15 minutes, and a solution of 4.09 g of 3,4-dihydro-7-methoxy-1 (2H)-isoquinolinone in 30 ml of dimethylformamide was added dropwise in 15 minutes thereto. The mixture was stirred at 10° C. for 1 hour, mixed with water and shaken with toluene. The organic layer was washed with water, dried over anhydrous magnesium sulfate and concentrated in vacuo. The resultant residue was chromatographed on a column of silica gel, eluting with ethyl acetate to give 4.50 g of the titled compound.

Provenance & Evidence