Reference of 85068-32-2, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 85068-32-2 name is 2-(3,5-Bis(trifluoromethyl)phenyl)acetonitrile, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
In a round bottom flask 1,3,5-Benzenetricarbaldehyde 1 (0.5 g,3.1 mmol) and trifluoromethyl substituted phenylacetonitrile 2(9.7 mmol) were taken in absolute ethanol (300 mL). Sodium ethoxide(0.80 g, 11.6 mmol) was added drop wise to the above solution.Under protection from air, the solution was heated to reflux for 3 h. Then, volatiles were removed under reduced pressure. Under protection from air, 200 ml of water was added to the residue. The mixture was repeatedly extracted with small portions (30 mL) of dichloromethane. The combined organic layers were washed with brine, dried over MgSO4, filtered, and evaporated under vacuum condition to leave the residue. The resulting residue was chromatographed on silica gel (Wako C-300) using dichloromethane/hexane (1:1) mixed solvent as an eluent to give the desired compound(1.9 g, 90% for 3a, 2.4 g, 88% for 3b) as pale yellow solids.Compound 3a, pale yellow solid, M.p. 231-232 C; 1H NMR(400 MHz, CDCl3) 7.72 (s, 3H, aryl H), 7.76 (d, 6H, aryl H, J = 7.3 Hz),7.86 (d, 6H, aryl H, J = 7.3 Hz), 8.48 (s, 3H, ethenyl H). EI-MS (75eV):m/z 663 (M+). Elemental analysis calculated for C36H18F9N3: C,65.16%; H, 2.73%; N, 6.33%. Found: C, 65.30%; H, 2.55%; N, 6.49%.Compound 3b, pale yellow solid, M.p. 249-251 C; 1H NMR(400 MHz, CDCl3) 7.79 (s, 3H, aryl H), 7.99 (s, 3H, aryl H), 8.16 (s, 6H,aryl H), 8.51 (s, 3H, ethenyl H).EI-MS (75eV): m/z 867 (M+).Elemental analysis calculated for C39H15F18N3: C, 53.99%; H, 1.74%;N, 4.84%. Found: C, 53.81%; H,1.85%; N, 4.64%.
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 2-(3,5-Bis(trifluoromethyl)phenyl)acetonitrile, and friends who are interested can also refer to it.
Reference:
Article; Moriguchi, Tetsuji; Yakeya, Daisuke; Jalli, Venkataprasad; Journal of Molecular Structure; vol. 1185; (2019); p. 403 – 409;,
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