摘要:
The invention relates to a method for the telomorisation of non-cyclic olefins, comprising at least two conjugated double bonds (I) or mixtures which contain said olefins, with nucleophiles (II). A metal-carbene complex is used as a catalyst.
摘要:
The invention relates to the use of a onium salt functionalized by at least one organic function, as a soluble support, in the presence of at least one organic solvent, for organic synthesis of a molecule, in a homogenous phase, by at least one transformation of said organic function. The onium salt enables the synthesized molecule to be released. The onium salt is present in liquid or solid form at room temperature and corresponds to formula Al+, X1-, wherein A1+ represents a cation and X1- représents an anion.
摘要:
In order to provide a novel Lewis acid catalyst, which shows high reaction activity in aqueous medium, is easily recovered, and is excellent in reusability, a Lewis acid group expressed by the general formula (I):
MX n (I)
(wherein M represents a polyvalent element, X represents an anionic group, and n is an integer representing the valence of M) is linked and supported on a polymer membrane via an SO 3 or SO 4 group.
摘要:
Disclosed herein is a telomerization process for preparing fluorinated alkyl iodide telomers, comprising telomerizing a starting polyfluoroalkyl iodide with a terminally unsaturated perfluoro olefin or monochlorofluoro olefin.
摘要:
Free radical reaction of unsaturated material, dissolved in a polar, water immiscible organic solvent, and perfluoroalkyl iodide in the presence of buffer or means for adjusting pH of aqueous phase.
摘要:
To provide a catalyst for the formation of a carbon-carbon bond which can control side reactions under mild reaction conditions and also stereoregularity, to provide a method for the formation of a carbon-carbon bond using the said catalyst and to provide a method for an addition reaction using the said catalyst. The catalyst for the formation of a carbon-carbon bond comprising an azo compound shown by the general formula [1] (wherein R 1 is a lower alkyl group), the method for the formation of carbon-carbon bond comprising conducting a reaction in the presence of the said catalyst and the method for an addition reaction of an α-halogeno carboxylic acid derivative to an unsaturated compound comprising using the said catalyst.
摘要:
Disclosed is a method for grafting a polymer onto the surface of a carbonate material with carboxyl, amine, and/or hydroxyl functions on its surface. Said material is placed in suspension in a solution including the polymer to be grafted, which has a carboxyl, amine, and/or hydroxyl function, said solution also being comprised of a polymer solvent. A process which stimulates the dehydration into a carboxyl function of an amine and/or hydroxyl function is then performed, and the polymer is grafted onto the carbonate material using ester or amide links. The invention can be used in the cathode or naode of an electrochemical generator, in polymer materials with low polar properties, in ink, and also as a conductive coating on flexible plastic used as an electrical contact, as electromagnetic shielding, or as static protection.
摘要:
There is disclosed a catalyst, particularly a Friedel-Crafts alkylation catalyst, which comprises an aluminium halide of the formula AlX n R 3-n , where X is halogen preferably Cl, R is a substituted or unsubstituted alkyl, preferably methyl or ethyl, or a substituted or unsubstituted aryl, preferably phenyl and n is 1, 2 or 3, (preferably 2 or 3), chemically bonded to Hexagonal Mesoporous Silica (HMS) or derivitised HMS. Also disclosed are methods for the production of the catalyst and its use in alkylation reactions.