Reference of 611-09-6,Some common heterocyclic compound, 611-09-6, name is 5-Nitroindoline-2,3-dione, molecular formula is C8H4N2O4, 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 mixture of malononitrile (1 mmol), isatin (1 mmol), dicarbonyl (1 mmol), PEGOSO3H(0.1 mmol), and water (2 mL) was stirred under reflux for the appropriate time (shown in Tables 3, 4). After completion of the reaction, the reaction mixture was filtered and the residue was washed with ethanol. The crude solid product was recrystallized from EtOH to afforded the pure products in high purity and yield.Assignment of the structures of the products was based on their 1H NMR, 13C NMR,and IR spectra.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Nitroindoline-2,3-dione, its application will become more common.
Reference:
Article; Nasseri; Zakerinasab; Research on Chemical Intermediates; vol. 41; 8; (2015); p. 5261 – 5270;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem