Индол-4-карбоксальдегида

Химические свойства

White to dark brown solid

Использование

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.

Общее описание

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.

Синтез

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]+.