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. 1203705-55-8, name is 3-Bromo-1H-pyrazol-5-amine, A new synthetic method of this compound is introduced below., Formula: C3H4BrN3
Methyl 2-(2-bromo-7-hydroxy-5-methylpyrazolo / ,5-aj ‘pyrimidin-6-y I) acetate.; To a solution of 3-bromo-lH-pyrazol-5-amine (0.2 g, 1.235 mmol) and dimethyl 2- acetylsuccinate (0.697 g, 3.70 mmol) in xylene (10 mL) was added -toluenesulfonic acid monohydrate (2 mg, 10.51 muiotaetaomicron). The reaction mixture was heated at reflux under a Dean-Stark trap for 8 h. The solid was filtered and washed with hexanes to afford the title compound (0.201 g, 54.2%). ? NMR (400 MHz, MeOD) delta ppm 2.37 (3 H, s), 3.65 (2 H, s), 3.71 (3 H, s), 6.20 (1 H, s).
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.