Synthetic Route of 82560-12-1,Some common heterocyclic compound, 82560-12-1, name is 3-Amino-5-tert-butylpyrazole, molecular formula is C7H13N3, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
3-tert-butyl-1H-pyrazol-5-amine (J-III) (1 equiv., 40 g) was dissolved in dilute HCl (120 mL HCl in 120 mL water) and NaNO2(1.03 equiv., 25 g in 100 mL) was added dropwise over 30 min. After stirring for 30 min the reaction mixture was neutralised with Na2CO3. A diazonium salt obtained by reacting KCN (2.4 equiv., 48 g), water (120 mL) and CuCN (1.12 equiv., 31 g) was added dropwise within 30 min to the reaction mixture, which was then stirred for a further 30 min at 75 C. After complete conversion the reaction mixture was extracted with EE (3¡Á500 mL), the combined phases were dried over sodium sulphate and the solvent was removed in vacuo. The column chromatography purification (SiO2, 20% EE/Hexane) of the residue yielded a white solid (J-IV) (6.5 g, 15.1% yield).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 3-Amino-5-tert-butylpyrazole, its application will become more common.