反应详情

Into a solution of 1.67 g (15 mmol) of 3-pyrrole-carboxylic acid and 6.33 g (18 mmol) of β-alanine benzyl ester p-toluenesulfonate in 20 ml of dimethylformamide, a solution of 2.94 g (18 mmol) of diethyl phosphorocyanidate in 10 ml of dimethylformamide was added dropwise under ice cooling and stirring. A solution of 3.64 g (36 mmol) of triethylamine in 20 ml of dimethylformamide was then added dropwise. The reaction mixture was stirred at 0° C. for 1 hour and then at room temperature for 24 hours.

1. stirringThe reaction mixture was stirred at 0° C. for 1 hour