反应详情

To a solution of tert-butyl (2R,5S)-2-[2-(6-cyano-3-oxo-2,3-dihydro-4H-1,4-benzoxazin-4-yl)ethyl]-5-{[(3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)methyl]amino}piperidine-1-carboxylate (Intermediate 182, 0.138 g) in dioxane (2 mL) was added 4M HCl/dioxane (1 mL). After 1 hour at room temperature, the reaction was concentrated and evaporated twice from methanol. The solid was suspended in methanol and filtered to yield 73 mg of the name compound as a bis HCl salt.

1. concentrationthe reaction was concentrated
2. customevaporated twice from methanol
3. filtrationfiltered