51276-33-6Relevant academic research and scientific papers
Glycol-modified molybdate catalysts for efficient singlet oxygen generation from hydrogen peroxide
Wahlen, Joos,De Vos, Dirk,Jary, Walther,Alsters, Paul,Jacobs, Pierre
, p. 2333 - 2335 (2008/02/11)
Pretreatment of molybdate-exchanged layered double hydroxides in polyalcohols such as ethylene glycol affords heterogeneous catalysts showing largely improved oxidant efficiency compared to the unmodified materials. The Royal Society of Chemistry.
(S)-3,7-Dimethyl-5-octene-1,7-diol and Related Oxygenated Monoterpenoids from Petals of Rosa damascena Mill
Knapp, Holger,Straubinger, Markus,Fornari, Selenia,Oka, Noriaki,Watanabe, Naoharu,Winterhalter, Peter
, p. 1966 - 1970 (2007/10/03)
The methanolic extract obtained from rose flowers was subjected to XAD-2 adsorption chromatography. Prefractionation of the methanolic eluate using multilayer coil countercurrent chromatography (MLCCC) yielded five subfractions. From the least polar subfraction V, a major amount of the key odorants of rose oil, that is, isomeric rose oxides 1a/b, was liberated upon heat treatment at pH 2.5. Further Chromatographic workup of fraction V led, for the first time, to the identification of the genuine rose oxide precursor (S)-3,7-dimethyl-5-octene-1,7-diol (2). In addition to diol 2, the following monoterpene diols have been identified: 3,7-dimethyl-7-octene-1,6-diol (3), 2,6-dimethyl-1,7-octadiene-3,6-diol (4), (2E,5E)-3,7-dimethyl-2,5-octadiene-1,7-diol (5), (2E)-3,7-dimethyl-2,7-octadiene-1,6-diol (6), (2Z,5E)-3,7-dimethyl-2,5-octadiene-1,7-diol (7), (2Z)-3,7-dimethyl-2,7-octadiene-1,6-diol (8), (Z)-2,6-dimethyl-2-octene-1,8-diol (9), (E)-2,6-dimethyl-2-octene-1,8-diol (10), (Z)-2,6-dimethyl-2,7-octadiene-1,6-diol (11), (E)-2,6-dimethyl-2,7-octadiene-1,6-diol (12), (2E,6E)-2,6-dimethyl-2,6-octadiene-1,8-diol (13), (2E,6Z)-2,6-dimethyl-2,6-octadiene-1,8-diol (14), 2,6-dimethyloctane-1,8-diol (15), 2,6-dimethyl-7-octene-1,6-diol (16), (E)-3,7-dimethyl-2-octene-1,8-diol (17), (Z)-3,7-dimethyl-2-octene-1,8-diol (18), 3,7-dimethyloctane-1,7-diol (19), 2,6-dimethyl-7-octene-2,6-diol (20), 3,7-dimethyl-6-octene-1,3-diol (21) and (2E)-3,7-dimethyl-2,6-octadiene-1,4-diol (22).
Alkylation du linalol sur les carbones C8 (et C6)
Cuvigny, Therese,Julia, Marc,Rolando, Christian
, p. 9 - 28 (2007/10/02)
Metallation of linalool α to the distal double bond with strong bases is described.The corresponding carbanions have been alkylated or oxidized to give mixtures of products resulting from attack at both carbon 8 (major product) and carbon 6 (minor product).
6,7-EPOXY-LINALOOL AND RELATED OXYGENATED TERPENOIDS FROM CARICA PAPAYA FRUIT
Winterhalter, Peter,Katzenberger, Doris,Schreier, Peter
, p. 1347 - 1350 (2007/10/02)
Oxyganated terpenoids derived from linalool, a major constituent of papaya fruit volatiles, were studied by HRGC and HRGC-MS.Using a sample preparation technique suitable for the separation and enrichment of polar compounds, the two diastereoisomers of 6,7-epoxy-linalool, 2,6-dimethyl-octa-1,7-diene-3,6-diol, 2,6-dimethyl-octa-3,7-diene-2,6-diol, (E)- and (Z)-2,6-dimethyl-octa-2,7-diene-1,6-diol and 2,6-dimethyl-oct-7-ene-2,3,6-triol were identified.Additionally, each of four diastereoisomeric epoxy-linalool oxides in their furanoid and pyranoid forms were detected for the first time as natural plant constituents.Biogenetic pathways for formation and metabolism of the oxygenated linalool derives are discussed. Key Word Index - Carica papaya; Caricaceae; papaya fruit; 6,7-epoxy-linalool; epoxy-linalool oxides; terpene polyols.
