3-Amino-4-hydroxybenzenesulphonamide synthesis

1synthesis methods

Product Name:3-Amino-4-hydroxybenzenesulphonamide
CAS Number:98-32-8
Molecular formula:C6H8N2O3S
Molecular Weight:188.2

2-nitrochlorobenzene is sulfochlorinated with chlorosulfuric acid; the resulting sulfochloride is treated with ammonia to give 4-chloro-3-nitrobenzenesulfonamide; chlorine is replaced by hydroxyl by heating the product at 100 ℃ in aqueous sodium hydroxide solution. Finally, the hydroxybenzenesulfonamide is reduced with iron turnings to obtain 3-Amino-4-hydroxybenzenesulphonamide.

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Yield:-

Reaction Conditions:

with hydrogenchloride;zinc in ethanolHeating;

References:

Passerini,R.;Purrello,G. [Gazzetta Chimica Italiana,1960,vol. 90,p. 1277 - 1289]

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3-Amino-4-hydroxybenzenesulphonamide synthesis

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