Downstream synthetic route of 4769-97-5

4769-97-5, 4769-97-5 4-Nitroindole 145766, aindole-building-block compound, is more and more widely used in various fields.

4769-97-5, 4-Nitroindole is a indole-building-block compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A. 4-Aminoindole. Iron powder (1.20 g, 21.58 mmol) and acetic acid (2.47 mL, 43.19 mmol) are added to a solution of 4-nitroindole (1.0 g, 6.17 mmol) in ethanol (20 mL). The resulting suspension is heated to reflux for 14 hours. The ethanol is removed by rotary evaporation and the residue is partitioned between water and ethyl acetate. The ethyl acetate layer is dried over magnesium sulfate, filtered, and the solvents removed by rotary evaporation. The crude residue is purified via silica gel column chromatography using 1% methanol/methylene chloride as the eluent. The appropriate fractions are combined and the solvents removed by rotary evaporation to yield 0.815 g of 4-aminoindole as an orange solid (82% yield).

4769-97-5, 4769-97-5 4-Nitroindole 145766, aindole-building-block compound, is more and more widely used in various fields.

Reference£º
Patent; The Procter & Gamble Company; US6162818; (2000); A;,
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