2146-71-6Relevant academic research and scientific papers
PROCESS FOR CATALYTIC TRANSVINYLATION OF CARBOXYLIC ACIDS
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Paragraph 0038-0043, (2018/11/02)
A carboxylic acid is transvinylated with vinyl ester to give a vinyl ester product and the corresponding acid of the vinyl ester in the presence of a catalyst, at a temperature of 100° C. to 170° C. and a pressure of 2 bar abs. to 15 bar abs., wherein the vinyl ester, the carboxylic acid and the catalyst are supplied to a reactor, the transvinylation reaction is conducted, and, on the completion of the transvinylation, the vinyl ester product is separated from the reaction mixture by distillation, characterized in that the reaction mixture is decompressed in a decompression vessel, the gaseous phase obtained is condensed and recycled into the reactor without further purification, and the liquid phase obtained is freed of vinyl ester and corresponding acid with a first distillation, and the vinyl ester product is separated from the reaction mixture in a further distillation step.
PROCESS FOR THE PRODUCTION OF HIGHER CARBOXYLIC ACID VINYL ESTERS
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Page/Page column 40-41, (2017/01/31)
This invention concerns a process for the production of vinyl esters of carboxylic acids with 3 to 20 carbon atoms, via vinylation in the presence of palladium (Pd) catalyst in combination with copper (Cu) as co-catalyst stabilized by organic salts in the presence of ethylene and air or oxygen.
Method for Producing Vinyl Esters
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Paragraph 0050, (2014/12/09)
The present invention relates to a continuous, catalytic process for preparing a vinyl ester of the formula R—C(O)O—CH═CH2 by reaction of a carboxylic acid of the formula R—C(O)OH with a transvinylating reagent of the formula R1—C(O)O—CH═CH2, wherein the reaction is effected at a temperature of 90 to 160° C. and at a pressure of 0.5 to 15 MPa without withdrawal of a reactant in the presence of a transition metal catalyst containing at least one transition metal from the group of ruthenium, osmium, rhodium, iridium, palladium and platinum, and then the resulting reaction mixture is separated into its constituents.
Transvinylation as a First Stage of Coupling Production of Vinyl Esters and Acetic Acid or Propionic Acid Reaction Products
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Paragraph 0058-0059, (2014/12/09)
Process for coproduction of a vinyl ester of the formula R—C(O)O—CH═CH by transvinylation reaction of a carboxylic acid of the formula R—C(O)OH with a transvinylating reagent of the formula R1—C(O)O CH═CH2, characterized in that (a) the transvinylation reaction is conducted continuously at a temperature of 90 to 160° C. and at a pressure of 0.5 to 15 MPa without withdrawal of a reactant in the presence of a transition meta/catalyst containing at least one transition metal selected from the group of ruthenium, osmium, rhodium, iridium, palladium and platinum; (b) the resulting reaction mixture is separated into its constituents and the vinyl ester of the formula R—C(O)O—CH═CH2 and the carboxylic acid of the formula R1—C(O)—OH are removed; and (c) the carboxylic acid obtained after step (b) is converted to a derivative of the formula R1—C(O)—X, R1—CH2—OH or R6—C(O)—OH in which X is vinyloxy, O—CH—CH2, halogen, alkoxy of the formula OR2 in which R2 is a substituted or unsubstituted hydrocarbyl radical having 1 to 10 carbon atoms, amino of the formula NR3R4 in which R3 and R4 are each independently hydrogen or a substituted or unsubstituted hydrocarbyl radical having 1 to 10 carbon atoms, or carboxyl of the formula O—C(O)—R5 in which R5 is hydrogen or a substituted or unsubstituted hydrocarbyl radical having 1 to 10 carbon atoms, and R6 is the partly or fully halogen-substituted R1 radical.
VINYL ESTER PRODUCTION FROM ACETYLENE AND CARBOXYLIC UTILIZING HOMOGENEOUS CATALYST
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Page/Page column 72-73, (2010/11/18)
A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of Group VIII metal complex catalyst at a temperature of about 50 to 1800C results in quantitative yields of vinyl benzoate.
Novel tin (IV) compounds
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, (2008/06/13)
Novel tetracoordinated tin (IV) compounds, well suited as latent catalysts for the preparation of polyurethanes or for the crosslinking of curable diorganopolysiloxanes (upon thermal decomposition thereof into diorganotin dicarboxylates or dialcoholates), have the general formula (1): STR1 in which the radicals R, which may be the same or different, are each a linear or branched chain C1 -C20 alkyl radical, a mononuclear aryl radical, or an aralkyl or alkaryl radical, the alkyl moieties of which having from 1 to 6 carbon atoms; the radicals R1 and R2, which may be the same or different, are each a hydrogen atom, a cyano radical, a C1 -C6 alkyl radical, or an alkoxycarbonyl radical, the alkyl moiety of which having from 1 to 6 carbon atoms, with the proviso that R1 and R2 may together form a saturated hydrocarbon ring member having from 5 to 8 carbon atoms; the radical R3 is a hydrogen atom, a linear or branched chain C1 -C20 alkyl radical, a linear or branched chain C1 -C20 alkoxy radical, a mononuclear aryl radical or a mononuclear aryloxy radical; and a is 0 or 1.
