Inventors:
Zhufang Liu - Kingsport TN, US
Lori Cooke Ensor - Blountville TN, US
Guy Ralph Steinmetz - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 29/145
C07C 35/04
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.