179898-34-1, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 179898-34-1, name is 3-Bromo-5-fluorobenzonitrile belongs to nitriles-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.
824 mg (0.900 mmol) of tris(dibenzylideneacetone)dipalladium and 1.23 g (1.98 mmol) of rac-1,1′-binaphthalene-2,2′-diylbis(diphenylphosphane) are added to 9.00 g (45.0 mmol) of 3-bromo-5-fluorobenzenecarbonitrile in toluene (300 ml) under an argon atmosphere. After the addition of 19.5 g (54.0 mmol) of (1-ethoxyvinyl)tributylstannane, the mixture is stirred under reflux overnight. The reaction mixture is subsequently concentrated and the residue is taken up in 300 ml of THF. After the addition of 100 ml of an aqueous 2N hydrogen chloride solution the mixture is stirred at room temperature for 2 h. The reaction mixture is subsequently neutralized with a saturated aqueous sodium bicarbonate solution and extracted with ethyl acetate. The combined organic phases are dried over magnesium sulfate, filtered and concentrated in vacuo. The crude product is purified by flash chromatography (mobile phase: cyclohexane/ethyl acetate 9:1). 7.11 g (97% of theory) of the title compound are obtained.1H-NMR (400 MHz, DMSO-d6): delta=8.28 (t, 1H), 8.18-8.14 (m, 1H), 8.08-8.04 (m, 1H), 2.65 (s, 3H).GC-MS (Method 11): Rt=3.97 min; MS (EIpos): m/z=163 [M]+.
The synthetic route of 179898-34-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; AiCuris GmbH & Co. KG; US2011/124618; (2011); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts