New downstream synthetic route of 5-Chloropyrazolo[1,5-a]pyrimidine

With the rapid development of chemical substances, we look forward to future research findings about 29274-24-6.

The major producers of chemicals have been the Europe, Japan and China. Due to the growing call for a cleaner, greener environment, people will have to find innovative ways to maintain their relevance. Here is a compound 29274-24-6, name is 5-Chloropyrazolo[1,5-a]pyrimidine. This compound has unique chemical properties. The synthetic route is as follows. Product Details of 29274-24-6

To a solution of 5-chloropyrazolo[1,5-a]pyrimidine (295 mg, 1.92 mmol) in DCM (10 mL) was added (chloromethylene)dimethyliminium chloride (1.06 g, 6 mmol). The reaction was stirred at 45 C. overnight, and concentrated in vacuo. The residue was dissolved in saturated NaHCO3 aqueous solution (50 mL) and the resulted mixture was then extracted with EtOAc (50 mL¡Á3). The combined organic phases were dried over anhydrous Na2SO4 and concentrated in vacuo to give the title compound as a light yellow solid (380 mg, 100%). MS (ESI, pos. ion) m/z: 182.2 [M+H]+

With the rapid development of chemical substances, we look forward to future research findings about 29274-24-6.

Reference:
Patent; SUNSHINE LAKE PHARMA CO., LTD.; CALITOR SCIENCES, LLC; Xi, Ning; US2014/234254; (2014); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia