反应详情

N-t-Butoxycarbonyl-N'-thiomorpholinocarbonyl-N,N'-dimethylethylenediamine (4.92 g) was dissolved in a solution of 4N hydrogen chloride in ethyl acetate (60 ml) under ice-bath cooling. After being stirred at ambient temperature for 30 minutes, the solution was concentrated in vacuo to give N-thiomorpholinocarbonyl-N,N'-dimethylethylenediamine hydrochloride (3.93 g) as an oil. Rf: 0.25 (chloroform:methanol:acetic acid, 8:1:1, V/V)

1. temperaturecooling
2. concentrationthe solution was concentrated in vacuo