Synthetic Route of 74586-53-1, These common heterocyclic compound, 74586-53-1, name is 3-Bromo-5-methylaniline, 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.
A mixture of 3-bromo-5-methyl-aniline (1.86 g, 10 mmol), 2-chloroethanol (3.22 g, 40.00 mmol), KI (166 mg, 1.00 mmol) and CaCO3 (2.00 g, 20.00 mmol) in water (6 mL) and EtOH (6 mL) was heated at 100C for 36h, then at 120C for 20h. The reaction mixture was cooled to RT, diluted with EtOAc, washed with H20, sat. NaC1 and dried then evaporated under reduced pressure. The crude material was subjected to ISCO purification (40g silica; 0 % to 10% of MeOH in DCM) to give 2- [3-bromo-N-(2-hydroxyethyl)-5-methyl-anilino] ethanol YL4a (1.4 g, 51%). ?HNMR (300 MHz, CDC13) oe 6.71 (d, J = 22.0 Hz, 2H), 6.47 (s, 1H), 3.87 (t, J = 4.9 Hz, 4H), 3.61 – 3.53 (m, 4H), 3.41 (s, 2H), 2.29 (s, 3H) ppm. ESI-MS m/z calc. 273.04, found 274.31 (M+1)+; Retention time: 0.68 minutes.
The synthetic route of 74586-53-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; VERTEX PHARMACEUTICALS INCORPORATED; DAVIES, Robert, J.; CAO, Jingrong; COCKERILL, Meghan, Elise; COLLIER, Philip, Noel; DENINNO, Michael, Paul; DOYLE, Elisabeth; FRANTZ, James, Daniel; GAO, Huai; GOLDMAN, Brian, Anthony; GREY, Ronald, Lee; GRILLOT, Anne-laure; GU, Wenxin; HENDERSON, James, A.; IRARRAZAVAL, Raul Eduardo, Krauss; KOLPAK, Adrianne, Lynn; LIAO, Yusheng; MAGAVI, Sanjay Shivayogi; MALTAIS, Francois; MESSERSMITH, David; PIERCE, Albert, Charles; PEROLA, Emanuele; RYU, Elizabeth Jin-Sun; SYKEN, Joshua; WANG, Jian; (706 pag.)WO2016/197009; (2016); A1;,
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