公开(公告)号：AU2006314805B2

公开(公告)日：2012-02-02

申请号：AU2006314805

申请日：2006-11-09

Applicant: BASF SE

Inventor： SCHMID MARKUS ,  PRETOT ROGER ,  MISTRY DINESH ,  GOWER MARTIN ,  DUNN JOHN COLIN

IPC: C07C213/06 ,  C07C67/54 ,  C07C213/10 ,  C07C219/08

Abstract: The invention relates to a process in which a compound RCOOR (I) is made by a transesterification reaction of an ester compound RCOOR (II) with an alcohol ROH (III) in the presence of a transesterification catalyst, wherein R is H or C alkyl or CH=CR-; R is C alkyl; R is selected from the group consisting of alkyl having at least 4 carbon atoms, cycloalkyl having at least 5 carbon atoms, aryl, aralkyl, alkaryl and amino alkyl; and R is -H or - C alkyl, wherein alcohol ROH (IV) is formed as a byproduct and in which said byproduct (IV) is removed by distillation in the presence of an entrainer, in which the entrainer is a compound that suppresses the formation of an azeotrope between compound (II) and byproduct (IV). The process can be useful in the preparation of esters such as dimethyl amino ethyl (meth) acrylate. The invention also provides a method of separating alcohols and esters. In a further form of the invention a process of preparing esters by a transesterification process is provided in which the transesterification catalyst is homogenous.