A new synthetic route of 5-Chloro-3-nitro-1H-pyrrolo[3,2-b]pyridine

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1116136-63-0, its application will become more common.

Synthetic Route of 1116136-63-0 ,Some common heterocyclic compound, 1116136-63-0, molecular formula is C7H4ClN3O2, 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.

Into a 250 ml 3-necked roundbottom flask, was placed a solution of 5-chloro-3-nitro-1H- pyrrolo[3,2-b]pyridine (1.1 g, 5.56 mmol, 1.00 equiv) in 1,4-dioxane (30 ml). To this was added HCl (6mol/L) (15 ml, 90 mmol, 16.00 equiv). This was followed by the addition of a solution of Fe (2.5 g, 44.64 mmol, 8.00 equiv) in MeOH (50 ml). The resulting solution was allowed to react, with stirring, for 3 hours while the temperature was maintained at reflux in a bath of oil. A filtration was performed. The filtrate was concentrated by evaporation under vacuum using a rotary evaporator. The resulting solution was diluted with H2O. Adjustment of the pH to 7-8 was accomplished by the addition of Na2CO3. The resulting solution was extracted three times with 100 ml of EtOAc and the organic layers combined and dried over Na2SO4 and concentrated by evaporation under vacuum using a rotary evaporator. This resulted in 1.3 g (crude) of 5-chloro-1H-pyrrolo[3,2-b]pyridin-3-amine as a black solid.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,1116136-63-0, its application will become more common.

Reference:
Patent; MEMORY PHARMACEUTICALS CORPORATION; WO2009/23844; (2009); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem