- Method for preparing fatty alcohols with same carbon number by catalytic hydrodeoxygenation from fatty acid and/or fatty acid ester
-
The invention provides a method for preparing fatty alcohols with the same carbon number by catalytic hydrodeoxygenation from fatty acid and/or fatty acid ester. The method comprises the following step: in a reaction vessel, carrying out hydrodeoxygenation reaction on the fatty acid and/or fatty acid ester and hydrogen in the presence of a catalyst at a low temperature of 100-240 DEG C and under alow hydrogen pressure of 0.1-5 MPa to obtain desired fatty alcohol products with the same carbon number. According to the invention, the fatty alcohols with the same carbon number is prepared from the fatty acid and/or fatty acid ester through an active metal modified MeaXbAlc composite catalyst as defined herein. The method has the advantages of high conversion rate, good selectivity, mild reaction conditions, stable catalyst and the like, and has quite good industrial application prospect.
- -
-
Paragraph 0060; 0061; 0062; 0067; 0068; 0082; 0083; 0086
(2019/05/08)
-
- ALKENYL SUBSTITUTED 2,5-PIPERAZINEDIONES AND THEIR USE IN COMPOSITIONS FOR DELIVERING AN AGENT TO A SUBJECT OR CELL
-
Provided herein are compounds of Formula (I), and salts thereof, wherein each instance of RL is independently optionally substituted C6-C40 alkenyl. Further provided are compositions comprising a compound of Formula (I) and an agent. Further provided are methods and kits using the compositions for delivering an agent to a subject or cell and for treating and/or preventing a range of diseases. Further provided are methods of preparing compounds of Formula (I) and precursors thereof.
- -
-
Paragraph 00291; 00292
(2017/01/02)
-
- From esters to alcohols and back with ruthenium and osmium catalysts
-
There and back again: Hydrogenation of esters and the reverse reaction of dehydrogenative coupling of alcohols are efficiently catalyzed by dimeric complexes of Ru and Os under neutral conditions. The Os dimer (see picture) is an outstanding catalyst for the hydrogenation of alkenoates and triglycerides, and allows production of fatty alcohols from olive oil. This complex converts ethanol into ethyl acetate and hydrogen under reflux. Copyright
- Spasyuk, Denis,Smith, Samantha,Gusev, Dmitry G.
-
supporting information; experimental part
p. 2772 - 2775
(2012/05/20)
-
- Reduction of aromatic and aliphatic esters using the reducing systems MoO2(acac)2 or V(O)(OiPr)3 in combination with 1,1,3,3-tetramethyldisiloxane
-
An efficient reduction of aromatic and aliphatic esters with 1,1,3,3-tetramethyldisiloxane in combination with [MoO2(acac) 2] or [V(O)(OiPr)3] is reported. In the former system, the presence of triphenylphosphane oxide allows high conversion and good isolated yield to be reached. For the latter system, no ligand is necessary to obtain the corresponding alcohols with similar results. 1,1,3,3-Tetramethyldisiloxane in association with [MoO2(acac)2] or [V(O)(OiPr)3] was found to efficiently reduce aliphatic and aromatic esters. Copyright
- Pehlivan, Leyla,Metay, Estelle,Laval, Stephane,Dayoub, Wissam,Delbrayelle, Dominique,Mignani, Gerard,Lemaire, Marc
-
experimental part
p. 7400 - 7406
(2012/01/06)
-
- ACYCLIC SULFAMIDE DERIVATIVES
-
The present invention is related to acyclic sulphamide derivatives of formula (I), wherein R1 and R2 may be the same or different, when R1 and R2 are different, R1 is a linear C12-C20 alkyl group or a linear C12-C20 alkenyl group comprising 1, 2, 3 or 4 double bonds; and R2 is a hydrogen atom or a C1-C4 alkyl group, or when R1 and R2 are the same, R1 and R2 are a linear C14-C20 alkyl group or a linear C14-C20 alkenyl group with 1, 2, 3 or 4 double bonds, and pharmaceutically acceptable salts, solvates and hydrates thereof, useful for the manufacture of a medicament for satiety induction and ingestion control, corporal fat modulation and lipidic metabolism regulation and for the manufacture of a medicament for the treatment or prevention of diabetes and cardiovascular diseases. The acyclic sulphamide derivatives are also useful for cosmetic use for reducing subcutaneous fat.
- -
-
Page/Page column 22-23
(2008/06/13)
-
- Synthesis of pyridinium amphiphiles used for transfection and some characteristics of amphiphile/DNA complex formation
-
Pyridinium amphiphiles have found practical use for the delivery of DNA into cells. Starting from 4-methylpyridine, a general synthesis has been devised for the production of pyridinium amphiphiles which allows variation in both the hydrophobic part and in the headgroup area of the compounds. By means of differential scanning microcalorimetry, zeta potential, particle size measurements and cryo electron microscopy, some characteristics of the pyridinium amphiphile/DNA complexes have been determined.
- Meekel, Arthur A. P.,Wagenaar, Anno,Smisterova, Jarmila,Kroeze, Jessica E.,Haadsma, Peter,Bosgraaf, Bouke,Stuart, Marc C. A.,Brisson, Alain,Ruiters, Marcel H. J.,Hoekstra, Dick,Engberts, Jan B. F. N.
-
p. 665 - 673
(2007/10/03)
-
- Quantitative Treatment of the Rotational Dynamics of Flexible-Chain Molecules. 13C NMR Relaxation Study of Hydrocarbon Chains Attached to the Fluorene Anchor
-
13C spin-lattice relaxation times (T1) and nuclear Overhauser enhancements (NOEs) were measured for individual carbons in flexible-chain molecules consisting of a hydrocarbon chain attached to fluorene moiety at position 3 through an ester bond.Quantitative treatment of the relaxation data of the ring carbons revealed an anisotropic motion for all the molecules studied.The relaxation times of the chain carbons were analysed in terms of a correlation function describing multiple internal rotations about successive C-C bonds.The results (rotational diffusion constants) were used to discuss features of the chain mobility as a function of chain length and chain unsaturation.The assumptions involved in the quantitative treatment were examined and the values were compared with those of n-alkanes and lipid bilayers. - Keywords: 13C NMR spin-lattice relaxation times Rotational diffusion constants Rotational dynamics Overall and internal motions Hydrocarbon-chain esters of fluorene-3-carboxylic acid
- Pissas, D.,Dais, Photis,Mikros, E.
-
p. 263 - 275
(2007/10/02)
-
- Hydrogenation of Oleic Acid to 9-Octadecen-1-ol with Rhenium-Tin Catalyst
-
A new supported bimetallic catalyst, rhenium-tin, is able to reduce oleic acid to 9-octadecen-1-ol (cis and trans isomers) with appreciable yield under mild hydrogenation conditions.This paper reports investigations on the effects of catalyst preparation methods, types of support, catalyst raw materials, mole ratio of the metals, activation and reaction conditions on the activity and selectivity of the catalyst.Catalyst derived from the combination of ammonium perrhenate and stannic chloride on alumina gave the best performance, and the presence of tin in the catalyst is essential for the preservation of the olefinic bond of the oleic acid during hydrogenation.KEY WORDS: Hydrogenation, 9-octadecen-1-ol, oleic acid, rhenium-tin catalyst.
- Tang, Thin-Sue,Cheah, Kien-Yoo,Mizukami, Fujio,Niwa, Shu-ichi,Toba, Makoto,Choo, Yuen-May
-
p. 601 - 605
(2007/10/02)
-
- Tris (trimethylsilyl)silane in the deoxygenation of long chain unsaturated alcohols converts cis to trans isomers
-
During radical deoxygenation reactions tris (trimethylsilyl)silane can cause cis to trans isomerization and reduction of remote double bonds in contrast to tributyltin hydride.
- Johnson,Poulos
-
p. 2045 - 2048
(2007/10/02)
-
- Reduction of Long Chain and Bulky Carboxylic Esters by Sodium Tetrahydroborate
-
Methyl esters of long chain fatty acids as well as esters with functional (OH) and/or bulky substituents in alpha position and in the OR moiety may be effectively reduced with an excess of sodium tetrahydroborate at moderate temperature in dioxane-water without catalysts.The reaction has been applied to the reduction of a pool of triglycerides of natural origin (virgin olive oil) in order to obtain a mixture of the acyl residues reduced to the corresponding alcohols without any structural or configurational modification.They, no matter which was the advancement of the reaction, seemed to reproduce quite well the overall acyl composition, as shown by GC-MS analysis: the feasibility of such quantitative analysis may be extended, in order to obtain confirmatory evidences on the component identifications and to perform specific separations, to the corresponding chlorides, hydrocarbons and trimethylsilylethers.
- Giumanini, Angelo G.,Tubaro, Franco
-
p. 755 - 761
(2007/10/02)
-
- Vegetable origin fatty substance composition and cosmetic compositions containing the same
-
Vegetable fatty substance composition for use in cosmetics containing: fatty acid triglycerides 85-94%, fatty acid esters containing 40 carbon atoms 7-14%, vitamins 0.01-1.0%, antioxidant 0.5-1.5% if required. This composition is prepared by malaxing in the heated state, at a temperature not exceeding 50° C., fatty acid triglycerides to which the fatty acid ester is added and after mixing well, the vitamins, and if required, the antioxidant, are added. The fatty substance composition advantageously replaces the animal origin fatty substances in cosmetic compositions.
- -
-
-