64344-45-2Relevant articles and documents
Model studies on the pattern of volatiles generated in mixtures of amino acids, lipid-oxidation-derived aldehydes, and glucose
Adams, An,Kitryte, Vaida,Venskutonis, Rimantas,De Kimpe, Norbert
experimental part, p. 1449 - 1456 (2011/10/05)
The development of flavor and browning in thermally treated foods results mainly from the Maillard reaction and lipid degradation but also from the interactions between both reaction pathways. To study these interactions, we analyzed the volatile compounds resulting from model reactions of lysine or glycine with aldehydes originating from lipid oxidation [hexanal, (E)-2-hexenal, or (2E,4E)-decadienal] in the presence and absence of glucose. The main reaction products identified in these model mixtures were carbonyl compounds, resulting essentially from amino-acid-catalyzed aldol condensation reactions. Several 2-alkylfurans were detected as well. Only a few azaheterocyclic compounds were identified, in particular 5-butyl-2-propylpyridine from (E)-2-hexenal model systems and 2-pentylpyridine from (2E,4E)-decadienal model reactions. Although few reaction products were found resulting from the condensation of an amino acid with a lipid-derived aldehyde, the amino acid plays an important role in catalyzing the degradation and further reaction of these carbonyl compounds. These results suggest that amino-acid-induced degradations and further reactions of lipid oxidation products may be of considerable importance in thermally processed foods.
Process for preparing aldol derivatives from alkenes using catalyst
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Page/Page column 6-11, (2008/06/13)
The present invention provides a novel eco-friendly multi-functional catalyst system useful to obtain C2(n+1) aldol-derivative from Cn-alkenes where n ranges from 2 to 10 in a single step under hydroformylation reaction conditions and adol formation conditions.
Transformations of butyraldehyde in the presence of catalysts based on large-pore molecular sieves VPI-5 and AlPO4-8
Isakov, Ya. I.,Minachev, Kh. M.,Tome, R.,Tissler, A.,Oehlmann, G.,et al.
, p. 2004 - 2010 (2007/10/02)
It was found that zeolite-like ctystalline aluminophosphates VPI-5, Si-VPI-5, and Mn-VPI-5 as well as those derived from them, AlPO4-8, SAPO4-8, and MnAPO4-8, are capable of catalyzing aldol condensation and crotonization of butyraldehyde (BA).Pd/AlPO4-8 is catalytically active in hydrocondensation of BA with H2 at atmospheric pressure.The activities in BA conversion to 2-ethylhexane-3-ol-1-al increase in following order: Mn-VPI-5 +NaX (CsNaX), but they are much more stable.Pd/AlPO4-8 catalyzes BA conversion to 2-ethylhexanal even in the absence of H2 feed to the reaction zone.The influence of catalyst pretreatments and experimental conditions on the catalyst structures and catalytic activities is discussed. - Key words: butyraldehyde; condendation; crystalline aluminophosphates; molecular sieves; VPI-5; AlPO4-8; catalysis.
