Electric Literature of 15362-40-0, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 15362-40-0, name is 1-(2,6-Dichlorophenyl)-2-indolinone belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below.
EXAMPLE 9 1-(2,6-Dichlorophenyl)-3-isopropylidene-1,3-di-hydro-2H-indol-2-one 1-(2,6-Dichlorophenyl)-oxindole (27.8 g; 0.10 mole) is dissolved in 300 ml of acetone, pyrrolidine (10 ml; 0.12 mole) is measured to the solution and it is warmed to reflux temperature. The reaction mixture is refluxed for 3 hours and the solution is evaporated. The product separated in crystalline form is dissolved in dichloro-methane, extracted twice with 10% hydrogen chloride, the organic phase is dried over sodium sulfate, clarified with bone coal, filtered and evaporated. The product is used for the catalytic hydrogenation without recrystallization. Analytical samples may be obtained by recrystal-lization from ethyl acetate. Yield: 31.82 g of yellow crystal (97%). M.p.: 180-182 C. (ethyl acetate). IR (KBr): 1700 (C=O), 793 cm-1. 1H-NMR (CDCl3, TMS, 400 MHz): 2.46 (3H, s), 2.66 (3H, s), 6.40 (1H, dd, J=0.6, 7.8 Hz), 7.09 (1H, dt, J=1.2, 7.6 Hz), 7.17 (1H, dt, J=1.0, 7.6 Hz), 7.35 (1H, dd, J=7.6, 8.7 Hz), 7.50 (2H, d, J=8.2 Hz), 7.64 (1H, d, J=7.5 Hz) ppm. 13C-NMR (CDCl3, TMS, 101 MHz): 23.4, 25.4, 108.5, 122.0, 122.3, 123.7, 123.8, 127.6, 128.9, 130.4, 130.9, 135.9, 140.0, 156.1, 166.2 ppm. Analysis for the Formula C17H13Cl2NO (318.21): Calculated: C, 64.17; H, 4.12; Cl, 22.28; N, 4.40%. Found: C, 64.02; H, 4.11; Cl, 22.14; N, 4.39%.
The synthetic route of 1-(2,6-Dichlorophenyl)-2-indolinone has been constantly updated, and we look forward to future research findings.
Reference:
Patent; EGIS GYOGYSZERGYAR RT.; US2007/232619; (2007); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem