Discovery of 52867-42-2

At the same time, in my other blogs, there are other synthetic methods of this type of compound, Methyl 2-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate, and friends who are interested can also refer to it.

Synthetic Route of 52867-42-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 52867-42-2 name is Methyl 2-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.

Substrate 2 (5g) was dissolved in DMF (10mL), phosphorus oxychloride (10mL) was added to the reaction system at room temperature, the temperature was raised to 100 degrees, the reaction was carried out for 5h, and the reaction system was poured into ice water, ethyl acetate (3* 30mL) extraction, drying of the organic phase, spin drying,Crude column chromatography (n-heptane: ethyl acetate = 1:5),The product was obtained in 3 (2 g).

At the same time, in my other blogs, there are other synthetic methods of this type of compound, Methyl 2-methyl-5-oxo-2,5-dihydro-1H-pyrazole-3-carboxylate, and friends who are interested can also refer to it.