In addition to indoleacetic acid, indigo, and tryptophan, numerous compounds obtainable from plant or animal sources contain the indole molecular structure. 19005-93-7, formula is C9H7NO, Name is 1H-Indole-2-carbaldehyde. The best-known group of these compounds is the indole alkaloids, members of which have been isolated from plants representing more than 30 families. Electric Literature of 19005-93-7.
Ahmed Fouad, Manar;Ferretti, Francesco;Formenti, Dario;Milani, Fabio;Ragaini, Fabio research published 《 Synthesis of Indoles by Reductive Cyclization of Nitro Compounds Using Formate Esters as CO Surrogates》, the research content is summarized as follows. Alkyl and aryl formate esters were evaluated as CO sources in the Pd- and Pd/Ru-catalyzed reductive cyclization of 2-nitrostyrenes to give indoles. Whereas the use of alkyl formates requires the presence of a ruthenium catalyst such as Ru3(CO)12, the reaction with Ph formate can be performed by using a Pd/phenanthroline complex alone. Ph formate was found to be the most effective CO source and the desired products were obtained in excellent yields, often higher than those previously reported using pressurized CO. The reaction tolerates many functional groups, including sensitive ones like a free aldehydic group or a pendant pyrrole. Detailed experiments and kinetic studies allow to conclude that the activation of Ph formate is base-catalyzed and that the metal doesn’t play a role in the decarbonylation step. The reactions can be performed in a single thick-walled glass tube with as little as 0.2 mol-% palladium catalyst and even on a 2 g scale. The same protocol can be extended to other nitro compounds, affording different heterocycles.
19005-93-7, 1H-Indole-2-carbaldehyde is a useful research compound. Its molecular formula is C9H7NO and its molecular weight is 145.16 g/mol. The purity is usually 95%.
1H-Indole-2-carbaldehyde is a useful research chemical used as a reactant in the synthesis of substituted 2-amino-4H-chromenes and benzochromenes using K2CO3 as catalyst.
1H-Indole-2-carbaldehyde is a solvent that has been used in the protein data and molecular modeling study. The 1H NMR spectrum of this compound showed an intense signal at δ 4.8 ppm, corresponding to the hydroxyl proton. This solvent also has fluorescence properties, as shown by its photophysical and structural analysis. The 1H-indole-2-carbaldehyde molecule has an active methylene group and an oxindole ring with amine substituents., Electric Literature of 19005-93-7
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