反应详情

To the title compound of step A (622 mg, 1.74 mmol) in EtOAc (1 mL) was added 4M HCl in dioxane (10 mL). After 2 h, the reaction was concentrated to give the title compound of step B (507 mg) which was used without further purification. MS (ESI) mass calcd. for C12H13F3N2O, 258.1. m/z found 259.1 [M+H]+.

1. concentrationthe reaction was concentrated