4-Chloro-3-methylphenol → HCID 86610739, compound

Participants

Reaction Steps

To a solution of potassium carbonate (115 mg, 0.83 mmol), potassium iodide (catalytic amount) and 4-chloro-m-cresol (65 mg, 0.46 mmol) in dimethylformamide (2 ml) was added a solution of 6-dimethylcarbamoyloxy-1-(R)-(2-bromoethyl)-3,4-dihydro-1H-isoquinoline-trifluoroacetamide (160 mg, 0.38 mmol) obtained in step (e) of Example 190 in dimethylformamide (2 ml) gradually with stirring under cooling in an ice bath. Subsequently, the resulting mixture was stirred at 100° C., and after confirming the disappearance of the starting material by thin layer chromatography, the reaction temperature was cooled to ambient temperature and water was added to the reaction mixture with stirring. The resulting mixture was extracted with ethyl acetate, and the extract was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate and evaporated in vacuo. The residue obtained was purified by chromatography on a silica gel column using a mixed solvent of hexane and ethyl acetate (80:20) as the eluent to afford the title compound (154 mg, yield: 84%) as a pale yellow oil.

Provenance & Evidence