反应详情

To solution of propargylamine (2.00 g, 36.29 mmol) and Et3N (7.30 g, 72.59 mmol) in CH2Cl2 was added in small portions p-toluenesulfonyl chloride (6.90 g, 36.29 mmol) (J. T. Baker) at 0° C. After 5 min the mixture was filtered and the filtrate was concentrated to a residue that upon direct application on a silica gel column with a 0-40% EtOAc in hexanes gradient yielded 4-Methyl-N-(prop-2-ynyl)-benzenesulfonamide. (Yield 7.30 g, 96%).

1. filtrationAfter 5 min the mixture was filtered
2. concentrationthe filtrate was concentrated to a residue that upon direct application on a silica gel column with a 0-40% EtOAc in hexanes gradient