申请人:Liu Zhufang
公开号:US20120149946A1
公开(公告)日:2012-06-14
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-tetramethylcyclo-butane-1,3-diol hydrogenation product by contacting the diol with hydrogen in the presence of a supported ruthenium catalyst.
本发明公开了一种制备2,2,4,4-四烷基环丁烷-1,3-二醇的方法,该方法通过在碳纳米管负载的铑催化剂存在下,对2,2,4,4-四烷基环丁烷-1,3-二酮进行氢化反应。该方法可用于制备2,2,4,4-四甲基环丁烷-1,3-二醇。该方法可在液态或气态、有溶剂或无溶剂的情况下进行。本发明还公开了一种方法,通过在支撑的铑催化剂存在下,将二醇与氢气接触,以改变2,2,4,4-四甲基环丁烷-1,3-二醇氢化产物的顺反异构体比例。