691877-03-9, A common heterocyclic compound, 691877-03-9, name is 3-Bromo-5-(trifluoromethyl)benzonitrile, molecular formula is C8H3BrF3N, 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.
In a 20-mL glass tube equipped with a screw cap, were placed o-CP-2Cz (0.39 g), NaOtBu (0.39 g), and Pd-XPhos-OMs (0.097 g). The tube was then capped and evacuate/refill with argon three times. 0.53 mL of 1-Br-3-CN-5-CF3-C6H3 and 4.0 mL of anhydrous 1,4- dioxane were filled in under argon. The mixture was stirred at 110 C for 16 h. For work- up, the mixture was diluted with DCM and filtered through silica gel. After removing the volatiles, flash chromatography (gradient 0 to 20% DCM in hexanes) was used to purify the product. Yield: 0.41 g, 51%.
The synthetic route of 691877-03-9 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; MASSACHUSETTS INSTITUTE OF TECHNOLOGY; BUCHWALD, Stephen, L.; HUANG, Wenliang; (89 pag.)WO2016/196885; (2016); A1;,
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