The Mass Spectra of Derivatives of Polyporic Acid

Autor:	R. D. Grigsby, W. S. G. Maass, A. G. Mcinnes, W. D. Jamieson, A. Taylor
Rok vydání:	1974
Předmět:	Abundance (chemistry) Organic Chemistry Analytical chemistry Oxide Polyporic acid General Chemistry Partial pressure Catalysis Ion chemistry.chemical_compound chemistry Deuterium Mass spectrum Moiety
Zdroj:	Canadian Journal of Chemistry. 52:4117-4122
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v74-616
Popis:	The diacetate and di-O-methyl derivative of polyporic acid have anomalous mass spectra. Ions are observed at m/e values equal to the molecular weight but ions 2 mass units larger than these, often of greater intensity, are also observed. The abundance of such ions depends on the temperature of the sample, the pressure in the source, and the partial pressure of water in the instrument. In addition, ions m/e 420 and 462 are found in the spectrum of the diacetate which are parents of the M + 2 ion(s). Similarly, M + 17 and M + 32 ions are observed in the spectrum of the dimethoxy compound. When deuterium oxide and the ester or the perdeuterioacetyl derivative were introduced into the source M + 4 ions were seen in the mass spectra. These unusual reactions should permit diagnosis of the 2,5-dihydroxy-1,4-benzoquinone moiety in newly isolated natural products.
Databáze:	OpenAIRE
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