Application of 1114546-30-3, These common heterocyclic compound, 1114546-30-3, name is 4-Bromo-2-fluoro-3-methylbenzonitrile, 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.
Reference Example 3 4-[(2S,3S)-3-(tert-butyldimethylsilyloxy)-2-methyl-5-oxopyrrolidin-1-yl]-2-fluoro-3-methylbenzonitrile To a solution of 4-bromo-2-fluoro-3-methylbenzonitrile (1.10 g), (4S,5S)-4-(tert-butyldimethylsilyloxy)-5-methylpyrrolidin-2-one (1.18 g), cesium carbonate (2.51 g), tris(dibenzylideneacetone)dipalladium(0) (235 mg) and 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (297 mg) in dioxane (30 mL) was stirred under an argon atmosphere at 80 C. for 8 hr. 5 The reaction mixture was added to water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography to give the title compound as a colorless solid (yield: 347 mg, 19%). 1H-NMR(CDCl3)delta:0.11(6H,d,J=7.2 Hz), 0.91(9H,s), 1.04(3H,d,J=6.4 Hz), 2.19(3H,d,J=2.3 Hz), 2.50(1H,dd,J=16.8,2.4 Hz), 2.78(1H,dd,J=16.8,5.4 Hz), 4.09-4.22(1H,m), 4.44-4.50(1H,m), 6.96(1H,d,J=8.7 Hz), 7.45-7.53(1H,m).
The synthetic route of 1114546-30-3 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Takeda Pharmaceutical Company Limited; US2009/42967; (2009); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts