Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 61150-58-1, name is 2-(2-Bromo-4-fluorophenyl)acetonitrile, A new synthetic method of this compound is introduced below., Product Details of 61150-58-1
Add potassium hydroxide (8.39 g, 150 mmol) and tetrabutylamine bromide(0.3 g, catalytic) to a solution of 2-(2-bromo-4-fluorophenyl)acetonitrile (4 g, 18.69 mmol) and 1,3-dibromopropane (4.15 g, 20.5 mmol) in toluene (20 mL). Stir it at 100 0C temperature for 2 h. Dilute the mixture with water and extract with ethyl acetate. Wash the organic layer with 1 N HCl and aqueous saturated sodium chloride. Dry over magnesium sulfate. Remove the organic solvent to give the crude product.Distill to give l-(2-bromo-4-fluorophenyl)cyclobutanecarbonitrile (boiling point 110- 120 C/0.3 Torr.) (1.5 g, 31 %). MS (GC) m/z 253 [M]+.Add 6 mL of HCl saturated methanol to the above solid and stir overnight. Evaporate the solvent to dry. Add NaHCO3 (1 M, 30 mL) and ether (20 mL). Stir for 15 min. Separate the organic layer and extract the aqueous layer with ether. Combine the ether solution and remove the solvent. Dissolve the residue in methanol (10 mL) and KOH (1.5 g) and stir over the weekend. Remove methanol and add water (30 mL). Extract with ethyl acetate and then acidify the aqueous layer with HCl. Extract the acidic solution with ethyl acetate, dry over MgSO4, and remove the solvent to give the title compound (1.0 g, 24 %). MS (ES) m/z 271 [M-I]”.
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; ELI LILLY AND COMPANY; WO2008/144223; (2008); A2;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts