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    PRODUCTION OF TOCOPHERYL ESTER AND TOCOTRIENYL ESTER BY ACID CATALYST ESTERIFICATION
    1.
    发明专利
    PRODUCTION OF TOCOPHERYL ESTER AND TOCOTRIENYL ESTER BY ACID CATALYST ESTERIFICATION 失效

    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.

    3.
    发明专利
    未知

    公开(公告)号：DE3776482D1

    公开(公告)日：1992-03-12

    申请号：DE3776482

    申请日：1987-10-21

    Applicant: BASF AG

    Inventor： TAVS PETER DR ,  LAAS HARALD DR ,  SCHAUER HORST ,  ARNOLD LOTHAR DR

    IPC: C07C45/74 ,  C07C45/78 ,  C07C45/82 ,  C07C45/85 ,  C07C49/603

    Abstract: Prepn. of 2,5,6-trimethyl cyclohex-2-ene-1-one comprises an addn. reaction of diethyl ketone with crotonaldehyde (or precursors which form crotonaldehyde) in the presence of alkali; fractional distn. of the reaction mixt. to give volatile unchanged starting materials and a residue; heating the residue with alkali (catalytic amts) at 120-250 deg.C, or without the catalyst at 150-250 deg.C and then fractional distn.

    4.
    发明专利
    未知

    公开(公告)号：DE3908768A1

    公开(公告)日：1990-09-20

    申请号：DE3908768

    申请日：1989-03-17

    Applicant: BASF AG

    Inventor： HOERCHER ULRICH DR ,  JESSEL BARBARA DR ,  BOCKSTIEGEL BERNHARD DR ,  GRAFEN PAUL DR ,  LAAS HARALD DR

    IPC: B01J27/122 ,  C07B61/00 ,  C07C46/08 ,  C07C50/02

    Abstract: Process wherein trimethylphenol is oxidised with oxygen or an oxygen-containing gas in the presence of a catalyst which contains a copper(II) halide in a two-phase reaction medium consisting of water and an aliphatic alcohol at high temperature, characterised in that the reaction is performed in a mixture of water and a saturated aliphatic alcohol with 12 to 18 C-atoms and a flash point above 120 DEG C, such as 1-dodecanol, 1-tetradecanol, 1-hexadecanol or 1-octadecanol, especially 1-dodecanol, and at temperatures between 60 and 100 DEG C. … Particularly good yields of TMBQ are obtained when the reaction is performed in the presence of a copper(II) halide, such as CuCl2 or CuBr2, and an alkaline earth metal halide, especially CaCl2 or MgCl2, or an alkali metal halide, especially LiCl and NaCl, as catalyst system.

    Tocopherol and tocopheryl acetate production
    7.
    发明专利
    Tocopherol and tocopheryl acetate production 未知

    公开(公告)号：DE19603142A1

    公开(公告)日：1997-07-31

    申请号：DE19603142

    申请日：1996-01-29

    Applicant: BASF AG

    Inventor： JAEDICKE HAGEN DR ,  GRAFEN PAUL DR ,  LAAS HARALD DR

    IPC: C07D311/72 ,  C07D311/70 ,  C07D317/36

    Abstract: Production of d,l- alpha -tocopherol (IA) or d,l- alpha -tocopheryl acetate (IB) comprises reacting 2,3,5-trimethyl-hydroquinone (II) with phytol (III) or isophytol (IV) in a cyclic carbonate solvent (V) at 100-200 deg C and optionally esterifying the resulting (IA) with acetic anhydride. R1, R2, R3 = H, Me, or Et; R4 = H, Ph or alkyl optionally substituted by Ph or O-containing groups and containing up to 20C, especially H; Me; Et; iPr; Ph; or CH2OMe.

    8.
    发明专利
    未知

    公开(公告)号：DE3636057C1

    公开(公告)日：1988-01-07

    申请号：DE3636057

    申请日：1986-10-23

    Applicant: BASF AG

    Inventor： TAVS PETER DR ,  LAAS HARALD DR ,  SCHAUER HORST ,  ARNOLD LOTHAR DR

    IPC: C07C45/74 ,  C07C45/78 ,  C07C45/82 ,  C07C45/85 ,  C07C49/603 ,  C07C45/72

    Abstract: The yield of 2,5,6-trimethyl-cyclohex-2-en-1-one is increased by reacting diethyl ketyone, in the presence of an alkali, with crotonaldehyde or a compound which is converted to crotonaldehyde under the reaction conditions chose, and working up the reaction mixture by distillation, by a method in which the distillation residue obtained is either (a) heated at from 120 DEG to 250 DEG C. in particular from 120 DEG to 200 DEG C., with the addition of a catalytic amount of an alkali, or (b) heated at from 150 DEG to 250 DEG C. without the addition of such a substance, and the mixture of 2,5,6-trimethylcyclohex-2-en-1-one and diethyl ketone which is formed from the distillation residue as a result of the heat treatment is separated by distillation.

    9.
    发明专利
    未知

    公开(公告)号：DE3302498A1

    公开(公告)日：1984-07-26

    申请号：DE3302498

    申请日：1983-01-26

    Applicant: BASF AG

    Inventor： LAAS HARALD DR ,  TAVS PETER DR ,  HANNEBAUM HEINZ ,  STROEZEL MANFRED

    IPC: C07C46/08 ,  C07F15/06 ,  C07C119/10 ,  C07C50/02

    Abstract: Improved process for the preparation of salcomine useful as an oxidation catalyst for the oxidation of alkylated phenols to the corresponding alkylated p-benzoquinones by reacting salicylaldehyde with ethylenediamine in a mole ratio of about 2:1 and a cobalt salt in a liquid reaction medium wherein the reaction medium is a linear or cyclic carboxamide which is disubstituted on the nitrogen, in particular dimethylformamide, and the cobalt salt is cobalt carbonate or with the cobalt hyroxide carbonate, 2 CoCO3.3 Co(OH)2.H2O. Preparation of the salcomine in accordance with the invention offers significant advantages, both in the preparation of the salcomine itself and in the subsequent oxidation of the trimethylphenol to trimethyl-p-benzoquinone utilizing the salcomine.

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