Synthetic Route of 2033-45-6, 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. 2033-45-6 name is 3,5-Dimethyl-4-iodopyrazole, 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.
(b) 4-iodo–3,5-dimethyl- I -tosyl- 1 H-pyrazole: Triethylamine (1 2.73g, 126. 8nunol) was added toa solution of 4-iodo-3,5-dimeihyl-1H-pyrazole (141)7g. 63.4nimol) in DCM (250 mL), followed byaddition of TsC1 (13.3g 69,7minoi). The mixture was then stirred overnight. After completionof the reaction, water (100 mL) was added and the mixture was extracted with EtOAc (3x80m1). The orgamie solvent was collected and removed under reduced pressure, the residue was purified by silica gel-column to obtaine 4-iodo-3,5-dhnethyl-1-tosyl-IH-pyrazoie (8.0g. yield 33.6%) as a white solid ,LCMS (022): 222.7 [M+H]t Rt :1.65 mm
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3,5-Dimethyl-4-iodopyrazole, and friends who are interested can also refer to it.