Suvarna Garge (Editor)

2 Aminophenol

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Formula  C6H7NO
Melting point  174 °C
Molar mass  109.13 g/mol
Density  1.33 g/cm³
2-Aminophenol 2Aminophenol955561HNMR
Appearance  White orthorhombic pyramidal needles

2-Aminophenol is an organic compound with the formula | C=6 | H=4 (OH)N| H=2 . Along with its isomer 4-aminophenol, it is an amphoteric molecule and a reducing agent. It is a useful reagent for the synthesis of dyes and heterocyclic compounds. Reflecting its slight hydrophilic character, white powder is moderately soluble in alcohols and can be recrystallised from hot water.

Contents

2-Aminophenol 2Aminophenol Wikipedia

Synthesis and structure

2-Aminophenol httpsuploadwikimediaorgwikipediacommonsff

2-Aminophenol (and its isomer, 4-aminophenol) is industrially synthesized by reducing the corresponding nitrophenol by hydrogen in the presence of various catalysts. The nitrophenols can also be reduced with iron.

2-Aminophenol 2Aminophenol 99 SigmaAldrich

The compound exhibits intra- and intermolecular hydrogen bond involving the neighbouring amine and hydroxyl groups. As a result, 2-aminophenol has a rather high melting point compared to other compounds with a similar molecular mass such as methylphenol.

Applications

2-Aminophenol 2Aminophenol Wikipedia

2-Aminophenol has a variety of uses. As a reducing agent, it is marketed under the names of Atomal and Ortol to develop black-and-white photographs. 2-Aminophenol is an intermediate in the synthesis of dyes. It is particularly useful in yielding metal-complex dyes when diazotized and coupled to a phenol, naphthol, or other aromatic or resonant dye species. Metal complex dyes using copper or chromium are commonly used for producing dull colors. Tridentate ligand dyes are useful because they are more stable than their bi- or mono-dentate counterparts.

2-Aminophenol 2aminophenol Synthesis

Due to the adjacency of the amino and hydroxyl groups, 2-aminophenol readily forms heterocycles. These heterocycles, such as benzoxazoles, can be biologically active and useful in the pharmaceutical industry:

References

2-Aminophenol Wikipedia


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