Some common heterocyclic compound, 20780-72-7, name is 4-Bromoisatin, molecular formula is C8H4BrNO2, 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. Safety of 4-Bromoisatin
General procedure: To mixture of isatins (1 mmol), malononitrile (1 mmol), and dimedone or 4-hydroxycoumarin or barbituric acids (1 mmol) in ethanol (4 mL), 5mg of Fe3O4APTPOSS MNPs added as the catalyst, and the mixture was stirred for an appropriate time at room temperature (Table 2). The reaction was monitored by TLC. After completion of the reaction, precipitate was filtered and dried in a drying oven to furnish 2-aminopyrano-3-carbonitriles.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 20780-72-7, its application will become more common.
Reference:
Article; Safaei-Ghomi, Javad; Nazemzadeh, Seyed Hadi; Shahbazi-Alavi, Hossein; Catalysis Communications; vol. 86; (2016); p. 14 – 18;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem