82766-40-3Relevant academic research and scientific papers
Phosphine-pyridonate ligands containing octahedral ruthenium complexes: Access to esters and formic acid
Sahoo,Jiang,Bruneau,Sharma,Suresh,Roisnel,Dorcet,Achard
, p. 3492 - 3498 (2017/08/23)
The preparation of three well-defined ruthenium complexes arising from phosphine-pyridon-e/-ate ligands is described. Solvent dependent Lewis acidic species formation was observed with these complexes. Selective formation of acetals or esters from primary alcohols was observed in the presence of these catalysts. Preliminary evaluation of these complexes in the base free hydrogenation of carbon dioxide is also reported.
Nitrous Oxide as a Hydrogen Acceptor for the Dehydrogenative Coupling of Alcohols
Gianetti, Thomas L.,Annen, Samuel P.,Santiso-Quinones, Gustavo,Reiher, Markus,Driess, Matthias,Grützmacher, Hansj?rg
supporting information, p. 1854 - 1858 (2016/02/03)
The oxidation of alcohols with N2O as the hydrogen acceptor was achieved with low catalyst loadings of a rhodium complex that features a cooperative bis(olefin)amido ligand under mild conditions. Two different methods enable the formation of either the corresponding carboxylic acid or the ester. N2 and water are the only by-products. Mechanistic studies supported by DFT calculations suggest that the oxygen atom of N2O is transferred to the metal center by insertion into the Rh-H bond of a rhodium amino hydride species, generating a rhodium hydroxy complex as a key intermediate.
Comparative analysis of three Australian finger lime (Citrus australasica) cultivars: Identification of unique citrus chemotypes and new volatile molecules
Delort, Estelle,Jaquier, Alain,Decorzant, Erik,Chapuis, Christian,Casilli, Alessandro,Frérot, Eric
, p. 111 - 124 (2015/02/19)
The volatile constituents of the peel of three cultivars of Australian finger lime (Citrus australasica) were investigated: Alstonville, Judy's Everbearing and Durham's Emerald. Both qualitative and quantitative GC-MS analyses were performed on their peel solvent extract. The results showed that the unique phenotypes of finger lime are also correlated to unique molecular compositions. Each cultivar revealed a different chemotype: limonene/sabinene for cv. Alstonville, limonene/citronellal/isomenthone for cv. Judy's Everbearing, and limonene/citronellal/ citronellol for cv. Durham's Emerald. To the best of our knowledge, these chemotypes have never been reported in any other citrus species. Furthermore, the amounts of some volatile constituents (γ-terpinene, α-pinene, β-pinene, citral), which are generally the major constituents besides limonene in lime species, were surprisingly low in the three cultivars. Comparative GC-MS analysis also showed that some volatile molecules tended to be specific to one cultivar and could therefore be considered as markers. Moreover six molecules were reported for the first time in a citrus extract and confirmed by synthesis. Heart-cutting enantioselective two-dimensional GC-MS was performed to determine the enantiomeric distribution of the major chiral constituents. The combined data on three finger lime cultivars gives evidence of their divergence from other citrus species.
METHOD FOR THE PRODUCTION OF ISOPULEGOL
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Page/Page column 14, (2008/06/13)
The invention relates to a method for the production of isopulegol of formula (I), comprising the cyclisation of citronellal of formula (II), in the presence of a tris(aryloxy)aluminium catalyst, characterised in the cyclisation is carried out in the presence of I. at least one acid and/or II. at least one compound selected from the group of carboxylate anhydrides, aldehydes, ketones and vinyl ethers.
DIARYLPHENOXY ALUMINUM COMPOUNDS
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Page/Page column 31-32, (2008/06/13)
The invention relates to diarylphenoxy aluminum compounds that can be obtained by reacting a bis(diarylphenol) ligand of formula (I) with an alkylaluminum compound and/or with a complex aluminum hydride. The invention also relates to the use of diarylphenoxy aluminum compounds as catalysts, and relates to a method for producing isopulegol by cyclizing citronellal in the presence of diarylphenoxy aluminum compounds serving as catalysts. The invention further relates to a method for producing menthol by cyclizing citronellal in the presence of diarylphenoxy aluminum compounds serving as catalysts and the subsequent hydrogenation.
CITRONELLYL CITRONELLATE AND CITRONELLYL GERANATE IN THE EUROPEAN HORNET, Vespa crabro (HYMENOPTERA: VESPIDAE)
Wheeler, J. W.,Ayorinde, F. O.,Greene, A.,Duffield, R. M.
, p. 2071 - 2072 (2007/10/02)
Citronellyl citronellate and citronellyl geranate, new insect natural products, have been identified in the van der Vecht's gland of the European hornet.
