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With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.882033-66-1, name is 4-Chloro-5-fluoro-1H-pyrrolo[2,3-b]pyridine, molecular formula is C7H4ClFN2, molecular weight is 170.5715, as common compound, the synthetic route is as follows.Quality Control of 4-Chloro-5-fluoro-1H-pyrrolo[2,3-b]pyridine

Example 224A mixture of 4-chloro-5-fluoro-lH-pyrrolo [2, 3-b] pyridine (30 mg) , 3-piperidinecarboxamide (45 mg) and N,N-diisopropylethylamine (30 muL) inDMI(0.4mL) was heated in the microwave reactor (2000C, 2 hours) . The reaction mixture was allowed to cool to ambient temperature and diluted with EtOAc (10 mL) and half-saturated aqueous sodium hydrogencarbonate (10 mL) . The aqueous phase was extracted with EtOAc(2x 10 mL) and combined organic layers were washed with brine (20 mL) , dried over MgSO4, and concentrated. Purification of the crude product by preparative silica gel thin-layer chromatography (EtOAc) gave 1- (5-fluoro-lH-pyrrolo [2, 3-b]pyridin-4-yl) -3- EPO piperidinecarboxamide (5 mgj as a pale brown solid.1H-NMR(DMSO-d) delta : 11.5 (IH, s) , 7.96 (lH,d, J=5.7Hz) , 7.38 (IH, s) , 7.33 (1H,d, J=3.0Hz) , 6.87 (IH, s), 6.49 (IH, d, J=3.0Hz) , 3.82-3.70 (2H,m) ,3.21-3.06 (2H,m), 2.52-2.44 (IH,m) , 1.94-1.52 (4H,m) . ? MS(ESI) :m/z 263(M+H)+.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,882033-66-1, 4-Chloro-5-fluoro-1H-pyrrolo[2,3-b]pyridine, and friends who are interested can also refer to it.

Reference:
Patent; ASTELLAS PHARMA INC.; WO2007/7919; (2007); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem