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13C Nuclear magnetic resonance spectroscopy of 4-methylcoumarins (4-methyl-2H-1-benzopyran-2-ones) (1988)

Parmar, V. S. ; Singh, S. ; Boll, P. M.

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 26 (1988), S. 430-433

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ISSN: 0749-1581

Keywords: 13C NMR chemical shifts ; 4-Methylcoumarins ; 4-Methyl-2H-1-benzopyran-2-ones ; Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The 13C NMR spectra of 36 differently substituted 4-methylcoumarins (4-methyl-2H-1-benzopyran-2-ones) have been recorded. The effects of an alkyl side-chain at C-3 on the chemical shift values and that of a methoxy or an acetoxy group in place of a hydroxy group have been observed and rationalized. This study may be helpful in the structure elucidation of new and natural 4-methylcoumarins.

Additional Material: 4 Tab.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/mrc.1260260515

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