SDS of cas: 6341-92-0, 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 6341-92-0 as follows.
General procedure: A sealed tube was charged with isatin 1 (1a 147 mg, 1.0 mmol), ammonia hydrate 2 (25%, 421 mg, 3.0 mmol) and H2O2 (30%, 227 mg, 2.0 mmol) at room temperature, and then solvent DMSO (4 mL) was added. The resulting mixture was stirred at 30 C in a sealed vessel under air after 4 h, then added 50 mL water to the mixture, extracted with CH3COOC2H5 3 times (3 x 50 mL). The extract was washed with 30% NaCl solution (V/V), dried over anhydrous Na2SO4 and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (Petroleum ether/Ethyl acetate = 3:1) to yield the desired product 3a as a yellow solid (89% yield).
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Reference:
Article; Wang, Yu-Wei; Zheng, Lei; Jia, Feng-Cheng; Chen, Yun-Feng; Wu, An-Xin; Tetrahedron; vol. 75; 11; (2019); p. 1497 – 1503;,
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