These common heterocyclic compound, 6966-01-4, name is Methyl 3-amino-6-bromopyrazine-2-carboxylate, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. category: Pyrazines
Step 2. Methyl 3-amino-6-bromopyrazine-2-carboxylate (15 g, 64.6 mmol) was suspended in 150 mL of dioxane at room temperature. Hydrazine hydrate (6.5 g, 130 mmol) was added and the reaction mixture was stirred at 60 C. for 2 hours. Initially the mixture became clear, but after a while a precipitate formed. The mixture was cooled to ambient temperature and crude product filtered off. The solid was washed with TBME and subsequently stirred in water. The material was filtered and washed with acetone to afford 3-Amino-6-bromopyrazine-2-carbohydrazide 4 as slightly yellow solid. The material was dried in vacuo. (10.5 g, 70%).
The synthetic route of Methyl 3-amino-6-bromopyrazine-2-carboxylate has been constantly updated, and we look forward to future research findings.