反应详情

(±)-tert-Butyl 2-(tetrahydro-2H-pyran-3-yl)hydrazinecarboxylate (216 mg, 1.00 mmol) was dissolved in dichloromethane (10 mL) and ethyl acetate (10 mL) and cooled to 0° C. The mixture was saturated with gaseous hydrogen chloride, warmed to ambient temperature and stirred for 1 hour. The mixture was concentrated in vacuo and the residue was concentrated with toluene (2×20 mL) to afford the titled compound.

1. concentrationThe mixture was concentrated in vacuo
2. concentrationthe residue was concentrated with toluene (2×20 mL)