N,N-Diethylaniline → P-Toluenesulfonamide

Participants

Reaction Steps

Diethylaniline (0.33 μL, 2.1 μmol, 1.1 equiv) was added in one portion to a stirred solution of the amine (1.0 mg, 1.9 μmol, 1 equiv) in THF (0.1 mL) at 0° C. under an argon atmosphere and the solution was stirred for 5 nin. p-Toluenesulfonyl chloride (0.73 mg, 3.8 mol, 2.0 equiv) was then added in one portion to the above solution at 0° C. The reaction mixture was stirred at 0° C. for 1 hr and then quenched with a 1:1 mixture of saturated aqueous sodium hydrogen carbonate solution and water (4 mL). The mixture was diluted with ethyl acetate (10 mL) and the layers were separated. The aqueous layer was extracted with ethyl acetate (10 mL) and the combined organic layer was dried over sodium sulfate. Concentration in vacuo left a yellow oil, which was purified by flash column chromatography (60% ethyl acetate-hexanes) to give the 4-methylphenyl sulfonamide derivative (1.2 mg, 93%) as a white solid.

Provenance & Evidence