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- Petersson, Göran, 1941-
(författare)
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Mass spectrometry of aldonic and deoxyaldonic acids as trimethylsilyl derivatives
- 1970
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Ingår i: Tetrahedron. ; 26, s. 3413-3428
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Tidskriftsartikel (refereegranskat)abstract
- Open-chain trimethylsilyl derivatives of aldonic and deoxyaldonic acids, which can be prepared from salts of the acids, are well suited for structure determination by mass spectrometry. The study is focussed on aldonic and unbranched monodeoxyaldonic acids, but several dideoxyaldonic and branched deoxyaldonic acids are included. Spectra of the derivatives of glycolic, lactic and hydracrylic acids are discussed. The structural isomers exhibit interpretable differences, whereas the spectra of the diastereomers are similar. The molecular weight and the number of OH groups can be deduced from the spectra, as well as the position of the “deoxy group” in unbranched deoxyaldonic acids. The most prominent fragmentations are α-cleavages of the carbon chain, frequently followed by rearrangement loss of trimethylsilanol. A structurally significant McLafferty-type rearrangement of a trimethylsilyl group is described. Several types of ions decompose by expulsion of small molecules such as CO, CH2O and CO2.
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| 3. |
- Petersson, Göran, 1941-
(författare)
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Reference mass spectra of hexoses and methylated hexoses
- 1970
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Ingår i: Archives of Mass Spectral Data. ; 1, s. 624-665
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Tidskriftsartikel (refereegranskat)abstract
- Certified mass spectra (70 eV) as tables of relative abundance and as bar graphs are given for trimethylsilyl derivatives of aldohexoses. From specific fragment ions, the number and position of O-methyl groups can be assessed for unknown methylated hexoses as outlined in a previous article (link).
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| 4. |
- Petersson, Göran, 1941-
(författare)
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Reference mass spectra of pentoses and methylated pentoses
- 1970
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Ingår i: Archives of Mass Spectral Data. ; 1, s. 666-681
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Tidskriftsartikel (refereegranskat)abstract
- Certified mass spectra (70 eV) as tables of relative abundance and as bar graphs are given for trimethylsilyl derivatives of aldopentoses. From specific fragment ions, the number and position of O-methyl groups can be assessed for unknown methylated pentoses as outlined in a previous article (link).
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