反应详情

A 4.0 mol/L-hydrochloric acid-dioxane solution (5.0 mL) was added to a dioxane (5.0 mL) solution of N2-(t-butoxycarbonyl)-N,N2,O,2-tetramethyl-3-oxoserinamide (Intermediate 8-2, 1.5 g) under ice cooling, and the mixture was stirred for 18 hours at room temperature. Then, the reaction mixture was concentrated to obtain N,N2,O,2-tetramethyl-3-oxoserinamide hydrochloride (Intermediate 9-2, white solid) (1.1 g, 98%).

1. concentrationThen, the reaction mixture was concentrated