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Henkel Reaction

Published Online: 15 SEP 2010

DOI: 10.1002/9780470638859.conrr307

Comprehensive Organic Name Reactions and Reagents

Comprehensive Organic Name Reactions and Reagents

How to Cite

2010. Henkel Reaction. Comprehensive Organic Name Reactions and Reagents. 307:1379–1382.

Publication History

  1. Published Online: 15 SEP 2010

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Abstract

Henkel reaction involves the thermal rearrangement or disproportionation of alkaline salts of aromatic acids to symmetrical diacids in the presence of a metallic salt and carbon dioxide. It is also known as Raecke process or Henkel process. The reaction mechanism includes the disproportionation of potassium benzoate in the presence of cadmium catalyst. This reaction has been applied for the production of terephthalic acid at an industrial scale.

Keywords:

  • Raecke process;
  • 2,3,6,7-naphthalenetetracarboxylic acid (NTC) dianhydride;
  • potassium benzoate;
  • cadmium catalyst