公开(公告)号：JPH10218875A

公开(公告)日：1998-08-18

申请号：JP2337598

申请日：1998-02-04

Applicant: BASF AG

Inventor： JOANNA LINDA VON DEM BUSCHEHUE ,  HAGEN IEEDIKKE ,  GUIDO HALMS ,  LAAS HARALD DR

IPC: B01J27/02 ,  B01J31/14 ,  C07D311/72

Abstract: PROBLEM TO BE SOLVED: To obtain the subject ester without using a largely excess of a water- binding agent or an expensive extraneous condensing agent by reacting tocopherol or tocotrienol with a corresponding carboxylic acid. SOLUTION: This ester can be obtained by esterifying tocopherol or tocotrienol with (A) a corresponding carboxylic acid. The esterification is carried out using 2.5-6mol of a carboxylic acid (preferably, acetic acid, sorbic acid, etc.) in an aliphatic, alicyclic or aromatic hydrocarbon having a boiling point of 80-200 deg.C, preferably 110-130 deg.C as a solvent, or 1.0-2.5mol of an carboxylic acid in a two-phase mixture as solvent consisting of an aliphatic or alicyclic hydrocarbon having a boiling point of 80-200 deg.C and a cyclic carbonate of formula I (R to R are each H or a 1-4C alkyl; R is H, a 1-4C alkyl, phenyl, etc.) or a γ-lactone of formula II in the presence of a non-oxidizing strong acid under continuous azeotropic distillation.