反应详情

A 4 N hydrogen chloride/dioxane solution (6.3 ml) is added to (1RS,2S)-1-(2-benzothiazolyl)-2-(tert-butoxycarbonyl)amino-3-phenyl-1-propanol (0.64 g, Reference compound No. 9-1) under ice cooling, then the temperature is raised to room temperature, and the mixture is stirred for 30 minutes. The reaction mixture is concentrated under reduced pressure, diethyl ether is added to the residue, and precipitated crystals are filtered off to give the titled reference compound (0.56 g).

1. concentrationThe reaction mixture is concentrated under reduced pressure, diethyl ether
2. additionis added to the residue
3. customprecipitated crystals
4. filtrationare filtered off