1-methyl-1H-pyrazole-4-sulfonyl chloride → tert-Butyl {2-[1-(4-chlorophenyl)cyclobutyl]-2-[3-({methyl[(1-methyl-1H-pyrazol-4-yl)sulfonyl]amino}methyl)phenyl]ethyl}carbamate

Participants

Reaction Steps

tert-Butyl (2-[1-(4-chlorophenyl)cyclobutyl]-2-{3-[(methylamino)methyl]phenyl}ethyl)carbamate (35 mg, 0.082 mmol) was dissolved in dichloromethane (0.8 mL). 4-Dimethylaminopyridine (10 mg, 0.082 mmol) and 1-methyl-1H-pyrazole-4-sulfonyl chloride (16 mg, 0.09 mmol) was added. The reaction mixture was stirred at room temperature over night. The reaction mixture was diluted with ethyl acetate (20 ml) and washed with aqueous hydrochloric acid (1 N, 5 ml, twice) and sodium bicarbonate. The organic layer was dried (magnesium sulfate) and concentrated in vacuo. The crude product was purified by preparative thin layer chromatography (silica, ethyl acetate, n-heptane). Yield: 36 mg (0.063 mmol, 77%)

Provenance & Evidence