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. 20870-78-4, name is 5-Bromoindolin-2-one belongs to indolines-derivatives compound, it is a common compound, a new synthetic route is introduced below. 20870-78-4
To a stirred solution of 5-bromoindolin-2-one (LIV, 7.25 g, 34.36 mmol) in tetrahydrofuran (70 mL) under nitrogen atmosphere, was added sodium hydride (5.9 g, 137.0 mmol) portion-wise at 0 C. After addition of sodium hydride, the reaction was stirred at room temperature for 30 min, then cooledto 0 C. methyl iodide (8.5 mL, 137.0 mmol) was added, and then allowed to stir at room temperature for 2h. The reaction mass was cooled to 0 C and carefully quenched with ice-water. Then the reaction mixture was diluted with water (150 mL) and ethylacetate (150 mL). The organic layer was separated, washed with water, brine solution, dried over sodium sulphate and concentrated under reduced pressure to afford the titled product as brown colour solid (LV, 7.4 g, 85%). LC-MS m/z calcd for CnHi2BrNO, 253.0; found 254.0 [M+H]+.
The synthetic route of 20870-78-4 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; JUBILANT BIOSYS LIMITED; RAJAGOPAL, Sridharan; HALLUR, Mahanandeesha S.; DEWANG, Purushottam; MURUGAN, Kannan; KUMAR C.H., Durga Prasanna; IYER, Pravin; MULAKALA, Chandrika; SIVANANDHAN, Dhanalakshmi; NAIR, Sreekala; ZAINUDDIN, Mohd.; TANTRY, Subramanyam Janardhan; GAJENDRAN, Chandru; RAJAGOPAL, Sriram; (334 pag.)WO2017/195216; (2017); A1;,
Indoline – Wikipedia,
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