Process for the preparation of 2,2,4,4-tetraalkylcyclobutane-1,3-diols
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United States of America Patent
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Apr 16, 2013
Grant Date -
Jun 14, 2012
app pub date -
Dec 9, 2010
filing date -
Dec 9, 2010
priority date (Note) -
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Abstract
Disclosed is a process for the preparation of a 2,2,4,4-tetraalkylcyclobutane-1,3-diols by hydrogenation of a 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of a catalyst comprising ruthenium deposited on a carbon nanotube support. The process is useful for the preparation of 2,2,4,4-tetramethylcyclobutane-1,3-diol. The process may be carried out in the presence or absence of a solvent and in the liquid or vapor phase. Also disclosed is a process for modifying the cis:trans ratio of the 2,2,4,4-tetramethylcyclobutane-1,3-diol hydrogenation product by contacting the diol with hydrogen in the presence of a supported ruthenium catalyst.
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