2182-55-0Relevant articles and documents
PROCESS TO PRODUCE A MONO VINYL ETHER
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Page/Page column 8-9, (2020/03/23)
A process to produce a mono vinylether of formula (I) R-O-CH=CH2 wherein R represents an organic group with at least three carbon atoms comprising a) reacting a mono hydroxy compound of formula (II) R-OH wherein R has the above meaning with acetylene in presence of a catalyst to get a product mixture comprising the mono vinyl ether, unconverted mono hydroxy compound and the catalyst b) adding an ester comprising at least one ester group of formula (III) X-O2 C- wherein X is a hydrocarbon group comprising less carbon atoms than R to the product mixture obtained in process step a) and reacting the remaining mono hydroxy compound R-OH with the ester in the presence of the catalyst to get a transesterification product comprising at least one ester group of formula (IV) R-O2C- and an alcohol of formula (V) X-OH wherein R and X have the above meaning and c) isolating the mono vinyl ether from the product mixture obtained after process step b), optionally followed by purification of the mono vinyl ether by distillation.
PROCESS FOR PRODUCTION OF HIGH-PURITY VINYL ETHER
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Page/Page column 6, (2010/10/19)
A process for producing a high-purity vinyl ether, which comprises: a step of subjecting an alcohol represented by the general formula (1) [in-line-formulae]R—O—H??(1)[/in-line-formulae] to a vinyl ether formation reaction in the presence of a catalyst to synthesize a vinyl ether represented by the general formula (2), [in-line-formulae]R—O—CH═CH2??(2)[/in-line-formulae]a step of removing the catalyst from the reaction mixture obtained in the above step to obtain a crude vinyl ether containing the vinyl ether and the unreacted raw material alcohol,a step of reacting the unreacted raw material alcohol in the crude vinyl ether, with the vinyl ether in the presence of an acid catalyst, to convert the alcohol into an acetal represented by the general formula (3), and a step of subjecting a crude vinyl ether containing the acetal (III) to distillation to obtain a high-purity vinyl ether.
Nucleophilic addition to acetylenes in superbasic catalytic systems: XIII. Fluoride cesium containing systems, efficient catalysts for alkanols vinylation
Oparina,Shaikhudinova,Parshina,Vysotskaya,Preiss,Henkelmann,Trofimov
, p. 656 - 660 (2007/10/03)
New catalytic systems CsF-MOH (M = Li, Na) were developed for the synthesis of alkyl vinyl ethers comparable in efficiency to cesium alcoholates. The addition of primary and secondary alcohols to acetylene occurs in the presence of these systems at the atmospheric (DMSO, 100°C) or at enhanced (without solvent, 135-140°C) acetylene pressure and affords alkyl vinyl ethers in up to 93% yield. 2005 Pleiades Publishing, Inc.
