Hofmann rearrangement of benzamide in the presence of electrochemically generated hypochlorite

Benzamide has been made to undergo Hofmann rearrangement, in the presence of hypochlorite (OCl-) generated in situ, by the electrolysis of sodium chloride solution using platinised titanium anode and graphite cathode. The product is not a pure primary amine, namely aniline; but a polymeric aniline d...

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Bibliographic Details
Published in:Pigment & resin technology 1999-12, Vol.28 (6), p.341-344
Main Authors: Rajendran, Susai, Pascal Regis, A. Peter, Trivedi, D.C
Format: Article
Language:English
Subjects:
Applied sciences
Aqueous solutions
Chemical engineering
Chemical industry and chemicals
Chloride
Dyes
Dyes, pigments
Electrolysis
Exact sciences and technology
Graphite
Industrial chemicals
Organic chemistry
R&D
Research & development
Sodium
Titanium
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Summary:Benzamide has been made to undergo Hofmann rearrangement, in the presence of hypochlorite (OCl-) generated in situ, by the electrolysis of sodium chloride solution using platinised titanium anode and graphite cathode. The product is not a pure primary amine, namely aniline; but a polymeric aniline derivative is produced. It has a free amino end; and or a free amino end is generated during the process of diazotisation. The product has been diazotised and coupled with naphthols to give dyes. The nature of the dyes have been analysed by uv-visible spectral studies. The dyes are slightly different from the dyes prepared from pure aniline.
ISSN:0369-9420
1758-6941
DOI:10.1108/03699429910302337