2,6-Dichlorobenzoyl chloride → 2,6-dichloro-N-[4-(toluene-3-sulfonyl)-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl]-benzamide

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Reaction Steps

4-(Toluene-3-sulfonyl)-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-ylamine (20 mg, 0.065 mmol) was dissolved in p-dioxane (0.400 mL) and water (0.100 mL), followed by 2,6-dichlorobenzoyl chloride (21 μL, 0.098 mmol) and NaHCO3 (11 mg, 0.13 mmol). The resulting mixture was stirred at room temperature for 15 hours, concentrated under vacuum, and purified by HPLC to give 2,6-dichloro-N-[4-(toluene-3-sulfonyl)-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl]-benzamide. LCMS (ESI): calc. C21H17Cl2N3O4S=477; obs. M+H=478.

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