Safety of 5-Chloro-1-methylindoline-2,3-dione, 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 60434-13-1 as follows.
General procedure: To a mixture of isatin (1 equiv.) and phenyl acetylene (1.2 equiv.) in water (3 mL), CuWO4 (10 mol%) and DABCO (40 mol%) were added at room temperature and the mixture was heated at 60 C for 2 to 5 h. After completion of reaction (monitoring by TLC) mixture was cooled to room temperature and extracted with EtOAc (2×10 mL). The organic layers were washed with brine, dried using sodium sulfate. Evaporation of the solvent gave the crude product which was purified by silica gel column chromatography to give 3-hydroxy-3-(phenylethynyl)indolin-2-ones (3a-3u).
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Reference:
Article; Paplal, Banoth; Sathish, Kota; Nagaraju, Sakkani; Kashinath, Dhurke; Catalysis Communications; vol. 135; (2020);,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem