Category: 501420-63-9

Reference of 501420-63-9,Some common heterocyclic compound, 501420-63-9, name is 2-(3-Bromo-4-fluorophenyl)acetonitrile, molecular formula is C8H5BrFN, 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-Bromo-4-fluorophenyl)acetonitrile (4.00 g, 18.32 mmol), bis(pinacolato)diboron (5.22 g, 20.15 mmol), potassium acetate (55.86 mmol) and bis(triphenylphosphine)palladium(II) chloride (15.2% of Pd) (393.53 mg, 0.55 mmol) were dissolved in oxygen-free 1,4-dioxane (40 ml, max. 0.005% of water) under argon. The reaction mixture was subsequently heated at a temperature of 130 C. for 90 min. When the reaction conversion was complete, the mixture was filtered through kieselguhr. The filtrate was diluted with dichloromethane (200 ml) and water (50 ml) and extracted. The organic phase was dried over sodium sulfate, subsequently filtered and evaporated to dryness in vacuo, giving [4-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]acetonitrile as oil (7.59 g, purity 81%, MS: 262.2 [M+H+]), which was reacted further without further work-up.

The synthetic route of 501420-63-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Merck Patent GmbH; FUCHSS, Thomas; EMDE, Ulrich; BUCHSTALLER, Hans-Peter; MEDERSKI, Werner; (224 pag.)US2016/83401; (2016); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Synthetic Route of 501420-63-9, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 501420-63-9 as follows.

To a stirred suspension of NaH (16.3 g, 406 mmol, 3 eq) in anhyd THF (100 mL) at 0 0C was added dropwise a solution of 2-(3-bromo-4-fluorophenyl)acetonitrile (29 g, 135 mmol) in anhyd THF (200 mL). After stirring Ih, MeI (42.1 mL, 675 mmol, 5 eq) was added to the reaction mixture. After stirring 2h at 0 0C, the reaction was allowed to warm to room temperature, quenched carefully with H2O and extracted with EtOAc. The combined extracts were washed with brine, dried over MgSO4 and evaporated in vacuo to give 2-(3-bromo-4- fluorophenyl)-2-methylpropanenitrile (29 g, 88%). 1H NMR (400 MHz, CDCl3) delta 7.66-7.64 (m, IH), 7.44-7.40 (m, IH), 7.15 (t, J=8.4 Hz, IH), 1.72 (s, 6H).

According to the analysis of related databases, 501420-63-9, the application of this compound in the production field has become more and more popular.

Reference:
Patent; EXELIXIS, INC.; BOLLU, Venkataiah; BOREN, Brant, Clayton; DALGARD, Jackline, Eve; FLATT, Brenton, T.; HAQ, Nadia; HUDSON, Sarah; MOHAN, Raju; MORRISSEY, Michael; PRATT, Benjamin; WANG, Tie-lin; WO2010/93845; (2010); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts