1-Methylpyrrolidine → 1-Cyano-4-hydroxy-7-(4-methoxy-phenoxy)-isoquinoline-3-carboxylic acid butyl ester

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-bromo-4-hydroxy-7-(4-methoxy-phenoxy)-isoquinoline-3-carboxylic acid butyl ester (190 mg, 0.43 mmol), copper(I) cyanide (76.3 mg, 0.85 mmol) and N-methyl-pyrrolidine (3 mL) was heated at 130° C. for 1 h. After cooled, reaction mixture was partitioned between ethyl acetate and water. Organic layer was washed with brine, dried over magnesium sulfate, filtered, and concentrated. Crude product was purified by silica gel chromatography (eluting with 2%-25% ethyl acetate in methylene chloride) to give the title compound (129 mg). MS-(+)-ion: M+1=392.80.

Provenance & Evidence