公开(公告)号：US20060135793A1

公开(公告)日：2006-06-22

申请号：US11283985

申请日：2005-11-21

Applicant: Robert Blessing ,  Leonardus Petrus

Inventor： Robert Blessing ,  Leonardus Petrus

IPC: C07D307/34

CPC classification number: C07C59/347 ,  C07C51/36 ,  C07C51/377 ,  C07C69/716 ,  C07D307/33 ,  C10G2300/1011 ,  C10L1/19 ,  C10L1/1905 ,  Y02P30/20

Abstract: The present invention provides a process for dimerisation of levulinic acid, wherein an organic phase comprising levulinic acid is contacted, in the presence of hydrogen, with a strong acidic heterogeneous catalyst comprising a hydrogenating metal, at a temperature in the range of from 60 to 170° C. and a pressure in the range of from 1 to 200 bar (absolute). The invention further relates to dimers of levulinic acid and their esters, to a mixture comprising levulinic acid and its dimers obtainable by such process and to an ester mixture obtainable by esterifying such mixture of levulinic acid and its dimers.

Abstract translation: 本发明提供了乙酰丙酸二聚的方法，其中包含乙酰丙酸的有机相在氢的存在下与包含氢化金属的强酸性多相催化剂在60至170℃的温度范围内接触 °C，压力范围为1至200巴（绝对值）。 本发明进一步涉及乙酰丙酸及其酯的二聚体，包括通过该方法可获得的乙酰丙酸及其二聚体的混合物，以及可通过酯化乙酰丙酸及其二聚体的混合物获得的酯混合物。