反应详情

The above ethyl 2-(benzyloxycarbonylamino)-2-(hydroxy)acetate (24.9 g), 34.2 ml of pyridine and 24.3 ml of acetic anhydride in 250 ml of tetrahydrofuran was stirred at room temperature for 30 minutes. It was then concentrated in vacuo, and dried under high vacuum for 4 hours to give 25.0 g of the title compound.

1. concentrationIt was then concentrated in vacuo
2. customdried under high vacuum for 4 hours