Reference of 1127-59-9, A common heterocyclic compound, 1127-59-9, name is 7-Methylindoline-2,3-dione, molecular formula is C9H7NO2, 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.
General procedure: A sealed tube was charged with isatin 1 (1a 147 mg, 1.0 mmol), ammonia hydrate 2 (25percent, 421 mg, 3.0 mmol) and H2O2 (30percent, 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 30percent 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 (89percent yield).
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Article; Wang, Yu-Wei; Zheng, Lei; Jia, Feng-Cheng; Chen, Yun-Feng; Wu, An-Xin; Tetrahedron; vol. 75; 11; (2019); p. 1497 – 1503;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem