Some tips on Ethyl 7-chloro-5-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 58347-48-1, Ethyl 7-chloro-5-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate, other downstream synthetic routes, hurry up and to see.

Related Products of 58347-48-1 ,Some common heterocyclic compound, 58347-48-1, molecular formula is C10H10ClN3O2, 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.

To a solution of ethyl 7-chloro-5-methylpyrazolo[l,5-a]pyrimidine-3-carboxylate (1.0 g, 4.18 mmol) in toluene (10 mL) was added (Bu3Sn)20 (5.0 g, 8.36 mmol). The reaction mixture was stirred at 120 C for 2 days, and concentrated in vacuo. The residue was dissolved in EtOAc (10 mL), and basified with sat. aHC03solution (10 mL) to pH~8-9. The aqueous phase was separated and acidified with 6N HC1 (10 mL) to pH~5. The solution was extracted with EtOAc (10 mL x 3). The organic phases were dried over anhydrous Na2S04, and filtered. The filtrate was concentrated in vacuo, and the residue was purified by silica gel column chromatography (PE/EA; 1 : 1) to give 7-chloro-5-methylpyrazolo[l,5-a]pyrimidine-3- carboxylic acid (230 mg, 26%) as a white solid. LC-MS m/z: 211.0 [M+H]+, Purity (214 nm): >97%, tR= 1.23min.

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 58347-48-1, Ethyl 7-chloro-5-methylpyrazolo[1,5-a]pyrimidine-3-carboxylate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; LYSOSOMAL THERAPEUTICS INC.; SKERLJ, Renato, T.; LANSBURY, Peter, T.; GOOD, Andrew, C.; BOURQUE, Elyse, Marie Josee; (139 pag.)WO2016/73895; (2016); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia