Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 3528-45-8, name is 1-(4-Methoxybenzyl)-1H-pyrazol-5-amine, A new synthetic method of this compound is introduced below., Product Details of 3528-45-8
A mixture of 1-(4-methoxybenzyl)-1H-pyrazol-5-amine (3 g, 10 mmol) and (ethoxymethylene)propanedioic acid, diethyl ester (3.8 g, 18 mmol) was heated at 120 C. for 1.5 h, then allowed to cool. After cooling, the mixture was concentrated and the resulting residue was purified with CombiFlash eluting with 0-30% EtOAc in hexanes to give an intermediate, LCMS (M+H): 374.1. The intermediate was dissolved in diphenyl ether (5 mL). The resulted solution was heated at 240 C. in microwave reactor for 1 h 20 min. After cooling, the solid crashed out was filtered and washed with hexanes to afford 4.0 g (80%) of the sub-title compound. LCMS calc. for C17H18N3O4 (M+H)+: m/z=328.1. Found: 328.1
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.