反应详情

The product of Step C (0.74 g, 0.0015 mole) in ethyl acetate (25 ml) was treated with HCl gas at -25° C. for 30 min. The solution was stirred at room temperature for 1 hour and concentrated in vacuo to provide the title compound as a white solid (~0.79 g).

1. concentrationconcentrated in vacuo