反应详情

A solution of [1-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-ylcarbamoyl]-2-(tetrahydro-pyran-4-yl)-ethyl]-carbamic acid t-butyl ester (3.2 g, 7.8 mmol) in methanol (150 mL) was treated with hydrogen chloride gas for 2 min at 0° C. and then stirred at room temperature for 1 h. After this time the mixture was concentrated in vacuo and the residue treated with acetonitrile (50 mL). The mixture was concentrated in vacuo which afforded 2-amino-N-[1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-3-(tetrahydro-pyran-4-yl)-propionamide hydrochloride (3.0 g, 100%) as a white solid.

1. concentrationAfter this time the mixture was concentrated in vacuo
2. additionthe residue treated with acetonitrile (50 mL)
3. concentrationThe mixture was concentrated in vacuo which