Synthetic Route of 13808-65-6,Some common heterocyclic compound, 13808-65-6, name is 4-Bromo-3-phenyl-1H-pyrazole, molecular formula is C9H7BrN2, 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.
Reference Example 1114-Bromo-3-phenyl-1-trityl-1H-pyrazole A suspension of 4-bromo-3-phenyl-1H-pyrazole (6.13 g, 27.5 mmol), trityl chloride (15.3 g, 55.0 mmol), and K2CO3 (11.4 g, 82.5 mmol) in DMF (100 mL) was stirred for 60 h at 90 C. After cooling to room temperature, the reaction mixture was poured into water and extracted with AcOEt. The extract was washed with water and brine, dried over MgSO4, concentrated under reduced pressure. The residue was recrystallized from hexane/THF to give the title compound (8.00 g, 63% yield) as a white solid: mp 181-183 C.; 1H NMR (300 MHz, CDCl3): delta ppm 7.16-7.22 (6H, m), 7.28-7.41 (13H, m), 7.87-7.91 (2H, m). Anal. Calcd for C28H21BrN2: C, 72.26; H, 4.55; N, 6.02. Found: C, 72.43; H, 4.66; N, 5.91.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4-Bromo-3-phenyl-1H-pyrazole, its application will become more common.