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Alkoxylation sites in naturally occurring coumarins using1H NMR

  • S B Kalidhar
Organic

Abstract

A comparison of1H NMR spectra of acetoxycoumarin and alkoxycoumarin shows that an aromatic proton para to the site of difference undergoes a larger change in chemical shift. In absence of a para proton,-ortho protons undergo this change. These help in locating alkoxylation sites in naturally occurring coumarins.

Keywords

Alkoxylation sites coumarins proton NMR 

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Copyright information

© Indian Academy of Sciences 1990

Authors and Affiliations

  • S B Kalidhar
    • 1
  1. 1.Department of Chemistry and BiochemistryHaryana Agricultural UniversityHisarIndia

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