Electric Literature of 97165-77-0, A common heterocyclic compound, 97165-77-0, name is 3,5-Dibromobenzonitrile, molecular formula is C7H3Br2N, its 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.
1,3,6,8-tetramethyl-9H-carbazole (1.07 g, 4.80 mmol), 3,5-dibromobenzonitrile (0.522 g, 2.00 mmol), sodium tert-butoxide (0.768 g, 8.00 mmol), tris (dibenzylideneacetone) dipalladium (O) (92.8 mg, 0.101 mmol) and tetrafluoroborate tri-tert-butylphosphine (0.220 g, 0.758 mmol) were added to a 100 mL three-neck flask having been substituted with nitrogen. The mixture was added with 35 mL of dehydrated toluene and stirred under heating at 95 C. for 12 hours. After the mixture was returned to room temperature, the mixture was added with chloroform and stirred. Then, the solution was rinsed with saturated saline. After the rinsing, the solution was added with anhydrous magnesium sulfate and dried. After the drying, the mixture was subjected to suction filtration for concentration, so that filtrate was obtained. The obtained filtrate was purified by silica gel column chromatography with hexane:chloroform (=2:1) as a developing solvent. The white solid matter obtained by concentrating the obtained fraction was stirred under heating by hexane and then filtered. The solid matter recovered by filtration was recrystallized with toluene, so that the white crystals of the target material were obtained in a yield amount of 470 mg and a yield of 45.0%. 1H-NMR (500 MHz, CDCl3, delta): 8.07 (d, J=2.0 Hz, 2H), 7.63 (s, 4H), 7.07 (t, J=2.0 Hz, 1H), 6.88 (s, 4H), 2.42 (s, 12H), 1.98 (s, 12H). ASAP mass spectrum analysis: Theoretical value: 545.7 Observed value: 545.7
The synthetic route of 97165-77-0 has been constantly updated, and we look forward to future research findings.