Dandia, Anshu et al. published their research in Journal of the Chinese Chemical Society (Taipei, Taiwan) in 2003 | CAS: 112656-95-8

7-Nitroindoline-2,3-dione (cas: 112656-95-8) belongs to indole derivatives. Indole produced by Proteus, Pseudomonas, Escherichia and other species was shown to be a growth promoting factor in Arabidopsis thaliana.Indole was synthesized in moderate yield via an o-naphthoquinone catalyzed tandem cross-coupling of substituted aniline and benzylamine under aerobic oxidation conditions.Category: indole-building-block

Microwave promoted and improved thermal synthesis of spiro[indole-pyranobenzopyrans] and spiro[indole-pyranoimidazoles] was written by Dandia, Anshu;Singh, Ruby;Sachdeva, Harshita;Gupta, Rajive;Paul, Satya. And the article was included in Journal of the Chinese Chemical Society (Taipei, Taiwan) in 2003.Category: indole-building-block This article mentions the following:

Spiro[indole-pyranoimidazoles] I (X = 7-NO2, 5-NO2, 5-CH3, 5,7-diCH3, 5-Br) and spiro[indole-pyranobenzopyrans] II (X = 7-NO2, 5-NO2, 5,7-diCH3, 5-Br, 5-Cl) are readily synthesized in one step in 86-92 and 91-97% yields by the Michael condensation of 3-dicyanomethylene-2H-indol-2-ones III with 1-phenyl-2-thiohydantoin (IV) and 4-hydroxy-2H-1-benzopyran-2-one (V), resp., without using any catalyst under different reaction conditions (conventional heating and microwave irradiation using (a) polar solvent (b) neutral alumina/silica gel as inorganic solid support in solvent free conditions). III was synthesized in situ by the Knoevenagel condensation of indole-2,3-diones and malononitrile in the absence of any catalyst. 100% Conversion was observed in most cases on TLC which also showed the formation of a single product. The comparison between the various methods is established. In the experiment, the researchers used many compounds, for example, 7-Nitroindoline-2,3-dione (cas: 112656-95-8Category: indole-building-block).

7-Nitroindoline-2,3-dione (cas: 112656-95-8) belongs to indole derivatives. Indole produced by Proteus, Pseudomonas, Escherichia and other species was shown to be a growth promoting factor in Arabidopsis thaliana.Indole was synthesized in moderate yield via an o-naphthoquinone catalyzed tandem cross-coupling of substituted aniline and benzylamine under aerobic oxidation conditions.Category: indole-building-block

Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles