Application of 115643-59-9, These common heterocyclic compound, 115643-59-9, name is 2-Amino-6-fluorobenzamide, 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.
Step 1 To a solution of 2-amino-6-fluorobenzamide (3.80 g, 24.7 mmol) and triethylamine (2.99 g, 29.6 mmol) in THF (50 mL) was added dropwise ethyl chloroglyoxylate (3.70 g, 27.1 mmol) under ice-cooling, and the mixture was stirred at room temperature for 3 hrs. The mixture was partitioned between ethyl acetate and water, and the organic layer was washed with saturated brine, dried over sodium sulfate and concentrated under reduced pressure. The obtained concentrated residue was suspended in EtOH, and insoluble material was collected by filtration to give ethyl ((2-(aminocarbonyl)-3-fluorophenyl)amino)(oxo)acetate as a white powder (4.95 g, 79%).
Statistics shows that 2-Amino-6-fluorobenzamide is playing an increasingly important role. we look forward to future research findings about 115643-59-9.
Reference:
Patent; Takeda Pharmaceutical Company Limited; Terauchi, Jun; Nara, Hiroshi; Oki, Hideyuki; Sato, Kenjiro; (166 pag.)US2015/329556; (2015); A1;,
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