In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 39603-24-2 as follows. Quality Control of 5,7-Dimethylindoline-2,3-dione
General procedure: A mixture of the compounds 11a-d (1 mmol) and substituted indolinone 15a-g (1.1 mmol) or appropriate aromatic aldehydes 12a-c (1.1 mmol) with catalyst amount of glacial acetic acid in ethanol (10 mL) was heated at reflux for 6 h and then cooled to room temperature and filtered. The obtained cake was washed with diethyl ether to get a white to light yellow solid. The crude product was purified by chromatography on silica gel using MeOH/CH2Cl2 to afford the desired compounds 16a-d and 17a-n.
According to the analysis of related databases, 39603-24-2, the application of this compound in the production field has become more and more popular.
Reference:
Article; Bao, Guanglong; Du, Baoquan; Ma, Yuxiu; Zhao, Meng; Gong, Ping; Zhai, Xin; Medicinal Chemistry; vol. 12; 5; (2016); p. 489 – 498;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem