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Pyrilium salts derived from 4-O-methyl resorcylic aldehyde

  • L. Ramachandra Row
  • T. R. Seshadri
Article

Summary

4-O-methyl ether of resorcylic aldehyde has been condensed with (I) acetophenone, (II) ω: 4-dihydroxy acetophenone, (III) ω∶3∶4-triacetoxy-and (IV) ω∶3∶4∶5 tetra-acetoxy-acetophenone to form pyrilium salts. Their properties and reactions are described. The first compound which has no hydroxyl groups in it undergoes change into the corresponding chalkone when its solution is treated with sodium acetate or when largely diluted with water. The reverse reaction takes place also rapidly in acid solution. The other compounds resemble closely pelargonidin, cyanidin and delphinidin though they exhibit a comparatively marked poverty of colour in solutions.

Keywords

Cyanidin Pale Yellow Fisetin Dilute Hydrochloric Acid Equol 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Indian Academy of Sciences 1941

Authors and Affiliations

  • L. Ramachandra Row
    • 1
  • T. R. Seshadri
    • 1
  1. 1.Department of ChemistryAndhra UniversityWaltair

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