25231-38-3Relevant articles and documents
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Bigler,P. et al.
, p. 2059 - 2080 (1978)
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Observation of bromomethyl ethers during the bromomethylation of aromatic compounds
St. Clair, Jerry D.,Valentine, James R.
, p. 1013 - 1014 (2005)
A literature method claiming to avoid the generation of highly toxic intermediates during bromomethylation of aromatic compounds was investigated. Gas chromatography revealed that such toxic intermediates may be present in the reaction mass in significant concentration. Indeed, these intermediates can be the major components under certain reaction scenarios. It is thus inaccurate to consider this chemistry free of hazardous intermediates. These potential hazards should be considered in any laboratory or scale-up implementation of this chemistry.
Process for preparing 1,1-disubstituted ethylenic monomers
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Paragraph 0079, (2015/11/16)
The present invention relates to a process for preparing 1,1-disubstituted ethylene monomers having general formula (I) from a compound of general formula (II) and an active methylene compound of general formula (III) using a catalytic amount of an ammonium or iminium salt in homogeneous phase or supported on a solid substrate. Said process allows the direct synthesis of the monomers and finds application in the preparation of a wide variety of monomers. The products obtained are reactive monomers of high purity which find application in the field of fast curing adhesives.
HYDROCARBOXYLATION OF METHYLENE DIPROPIONATE IN THE PRESENCE OF PROPIONIC ACID AND A HETEROGENEOUS CATALYST
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Paragraph 0122, (2013/10/08)
Disclosed is a process for the production and purification of glycolic acid or glycolic acid derivatives by the carbonylation of methylene dipropionate in the presence of a solid acid catalyst and propionic acid. This invention discloses hydrocarboxylations and corresponding glycolic acid separations wherein the propionic acid stream is readily removed from the glycolic acid and the propionic acid is recycled.
