Tyrian Purple: 6,6’-Dibromoindigo and Related Compounds

Abstract

The genesis of the purple dye from shellfish, its composition, origin, intermediates, analysis and synthesis of the components, 6,6’-dibromoindigo, 6-bromoindigo and 6,6’-dibromoindirubin are reviewed.

Keywords

• 6
• 6’-dibromoindigo
• 6-bromoindigo
• 6
• 6’-dibromoindirubin
• tyrindoxyl
• tyriverdin
• tyrindoleninone
• tyrindolinone
• synthesis
• structure
• properties