Indole-4-carboxaldehyde

Chemical properties

White to dark brown solid

The Uses of Indole-4-carboxaldehyde

Indole-4-carboxaldehyde is usually used as reactant in Biginelli reaction,preparation of antitumor agents,intramolecular Friedel-Crafts acylation,preparation of inhibitors of cell division in E. Coli,synthesis of Hantzsch pyridine-containing Schiff bases.

The Uses of Indole-4-carboxaldehyde

4-Indolecarbaldehyde is a synthetic intermediate used for pharmaceutical synthesis. Also used as reactant in Biginelli reaction, synthesis of aurora kinase A inhibitors, preparation of antitumor agents, intermolecular Friedel-Crafts acylation, preparation of inhibitors of cell division in E. coli and synthesis of Hantzsch pyridine-containing Schiff bases.

Definition

ChEBI: Indole-4-carbaldehyde is a heteroarenecarbaldehyde that is indole in which the hydrogen at position 4 has been replaced by a formyl group. It has a role as an algal metabolite. It is a member of indoles and a heteroarenecarbaldehyde.

What are the applications of Application

4-formyl Indole is a synthetic intermediate

Synthesis Reference(s)

The Journal of Organic Chemistry, 46, p. 1752, 1981 DOI: 10.1021/jo00321a053
Tetrahedron, 39, p. 3695, 1983 DOI: 10.1016/S0040-4020(01)88608-7

General Description

Indole-4-carboxaldehyde participates in the synthesis of arcyriacyanin A. Synthesis of 4-indole-4-carboxaldehyde has been reported. Intramolecular Friedel-Crafts (FC) acylation of indole-4-carboxaldehyde has been reported.

Synthesis

Tetrapropylammonium perruthenate (0.3 g, 0.85 mmol) was added in portions to a mixture of alcohol product from 1H-Indole-4-Methanol (2.5 g, 17 mmol), N-methylmorpholine N-oxide (3.0 g, 25 mmol) and 4 A molecular sieves (3.0 g) in anhydrous methylene chloride (30 mL) at room temperature. The mixture was stirred at room temperature under nitrogen for 1 h and then filtered. The filtrate was concentrated in vacuo, and the residue was purified by chromatography (SiO2, CH2Cl2) to provide Indole-4-carboxaldehyde as a white powder (2.0 g, 80percent): 1H NMR (300 MHz, CDCl3) δ10.2 (s, 1H), 8.52 (br s, 1H), 7.64-7.69 (m, 2H), 7.31-7.44 (m, 3H), CI MS m/z=146 [C9H7NO+H]+.