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https://hdl.handle.net/2440/23926
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dc.contributor.author | Asenstorfer, R. | - |
dc.contributor.author | Mares, D. | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | Tetrahedron: the international journal for the rapid publication of full original research papers and critical reviews in organic chemistr, 2006; 62(39):9289-9293 | - |
dc.identifier.issn | 0040-4020 | - |
dc.identifier.uri | http://hdl.handle.net/2440/23926 | - |
dc.description.abstract | Neutral hydroxylamine extracts of wheat contained a product that was colourless at pH<5 (λ max 340 nm) and yellow at pH>9 (λ max 400 nm). ESI-MS showed a major ion m/z 184.0 and a possible parent ion m/z 367.2 (MH⁺) suggesting that the product resulted from the reaction of 2,6-dimethoxy-p-quinone with hydroxylamine. However, mass spectral and other spectroscopic data indicated that the compound was neither of the 2,6-dimethoxy-p-quinone oximes. A product with identical absorbance, mass spectrum, electrophoretic mobility and HPLC retention time as the pigment from hydroxylamine extracts of flour was observed amongst the reaction products of hydroxylamine and 1,4-dihydroxy-2,6-dimethoxybenzene. The structure of this product was identified by NMR, 2D NMR and IR as 4,4′-dihydroxy-3,3′,5,5′-tetramethoxyazodioxybenzene. | - |
dc.description.uri | http://www.elsevier.com/wps/find/journaldescription.cws_home/942/description#description | - |
dc.language.iso | en | - |
dc.publisher | Pergamon-Elsevier Science Ltd | - |
dc.source.uri | http://dx.doi.org/10.1016/j.tet.2006.06.117 | - |
dc.subject | Wheat flour | - |
dc.subject | hydroxylamine | - |
dc.subject | hydroquinone | - |
dc.subject | oxime dimer | - |
dc.title | 4,4'-Dihydroxy-3,3',5,5'-tetramethoxyazodioxybenzene: an unexpected dimer formed during hydroxylamine extractions of wheat flour | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.tet.2006.06.117 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Mares, D. [0000-0002-8165-8140] | - |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 2 |
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