反应详情

To a solution of N-[3-(5-amino-1-methylpyrazol-4-yl)propyl]formamide (3.64 g, 20 mmol) and triethylamine (2.23 g, 22 mmol) in methylene chloride (50 ml) was added triphenylmethyl chloride (6.13 g, 22 mmol). The mixture was stirred at room temperature for 90 minutes. The reaction mixture was washed with successively 10% aqueous citric acid solution, brine, and 10% aqueous sodium carbonate solution. The organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo. The residue was triturated with ethyl acetate and dried in vacuo to give N-[3-(1-methyl-5-triphenylmethylaminopyrazol-4-yl)propyl]formamide (6.8 g) as a solid.

1. washThe reaction mixture was washed with successively 10% aqueous citric acid solution, brine, and 10% aqueous sodium carbonate solution
2. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. customThe residue was triturated with ethyl acetate
6. customdried in vacuo