3,4-Dichlorobenzyl chloride → 2-(3,4-Dichlorobenzyl)-1,2-dihydro-3-methyl-1-oxo-4-isoquinoline Acetic Acid

Participants

Reaction Steps

Sodium hydride (48 mg., 2.0 mmol) (Ventron, washed free of mineral oil with hexane) and 2 ml. dimethylformamide were reacted with 1,2-dihydro-3-methyl-1-oxo-4-isoquinoline acetic acid (217 mg., 1.0 mmol). After homogeneity was observed, 3,4-dichlorobenzyl chloride (196 mg., 1.0 mmol) in 1 ml. dimethylformamide was added. The mixture was heated at 110° for 3 hr, cooled and partitioned between hydrochloric acid and ethyl acetate. The crude product obtained from the organic layer after several aqueous washings, drying over magnesium sulfate, filtration, and vacuum evaporation was column chromatographed on silica gel with ethyl acetate; 104 mg., 28%, mp 218°-220°.

Provenance & Evidence