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    51.
    发明专利
    未知

    公开(公告)号：DE4242451A1

    公开(公告)日：1994-06-23

    申请号：DE4242451

    申请日：1992-12-16

    Applicant: BASF AG

    Inventor： FISCHER ROLF DR ,  PINKOS ROLF DR

    IPC: C07D201/02 ,  C07D207/26 ,  C07D207/267 ,  C07D307/32 ,  C07D307/33 ,  C07D315/00 ,  C07D207/263 ,  C07D209/34 ,  C07D307/83

    Abstract: Process for the preparation of 5-membered heterocycles of the general formula I in which R is methyl or hydroxyethyl, R , R , R , R and R are hydrogen, C1- to C12-alkyl, C 2- to C12-alkenyl, aryl, C3- to C8-cycloalkyl, C1- to C12-alkoxy, halogen, C2- to C20-alkoxycarbonylalkyl, C2- to C20-alkylcarbonyloxy, formyl, C2- to C20-formylalkyl, benzoyl, -CH(OR )(OR ), or R and R together are a C2- to C7-alkylene chain which is optionally monosubstituted to pentasubstituted by R or a =CH-CH=CH-CH= unit which is optionally monosubstituted to tetrasubstituted by R , and X is oxygen or N-R , by reacting 5-membered heterocycles of the general formula II in which R , R , R , R , R and X have the abovementioned meaning and Y is hydrogen, acetyl or C2- to C20-alkoxycarbonyl, with dimethyl carbonate or ethylene carbonate in the presence of a nitrogen-containing base at temperatures from 50 to 300@C and pressures from 0.01 to 50 bar.

    PREPARATION OF 1,6-HEXANEDIOL IN A PURITY OF ABOVE 99.5%
    53.
    发明专利
    PREPARATION OF 1,6-HEXANEDIOL IN A PURITY OF ABOVE 99.5% 未知

    公开(公告)号：MY137518A

    公开(公告)日：2009-02-27

    申请号：MYPI20053040

    申请日：2005-07-04

    Applicant: BASF AG

    Inventor： HAUNERT ANDREA DR ,  PINKOS ROLF DR ,  KRUG THOMAS ,  SIRCH TILMAN ,  KOCH MICHAEL DR ,  TEBBEN GERD-DIETER DR

    Abstract: THE PRESENT INVENTION PROVIDES A PROCESS FOR PREPARING 1,6-HEXANEDIOL BY HYDROGENATING DIALKYL ADIPATES, ALKYL 6-HYDROXYCAPROATES, 1,4-CYCLOHEXANEDIONE AND 4-HYDROXYCYCLOHEXAN-1-ONE AS ESTER MIXTURES COMPRISING IMPURITIES, BY A) FREEING RESULTING THE ESTERIFICATION MIXTURE OF EXCESS ALCOHOL AND LOW BOILERS IN A FIRST DISTILLATION STAGE (ALCOHOL REMOVAL), B) CARRYING OUT A SEPARATION OF THE BOTTOM PRODUCT IN A SECOND DISTILLATION STAGE INTO AN ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANEDIOLS AND A FRACTION COMPRISING AT LEAST THE MAJORITY OF THE 1,4-CYCLOHEXANEDIOLS, C) CATALYTICALLY HYDROGENATING THE ESTER FRACTION SUBSTANTIALLY FREE OF 1,4- CYCLOHEXANEDIOLS (ESTER HYDROGENATION) AND D) IN A PURIFYING DISTILLATION STAGE, OBTAINING 1 ,6-HEXANEDIOL FROM THE HYDROGENATION EFFLUENT IN A MANNER KNOWN PER SE, WHICH COMPRISES SELECTIVELY HYDROGENATING THE ESTER MIXTURE BEFORE STAGE A) AND/OR BEFORE STAGE B) (PURIFYING HYDROGENATION).

    PREPARATION OF TETRAHYDROFURAN
    55.
    发明专利
    PREPARATION OF TETRAHYDROFURAN 未知

    公开(公告)号：MY121092A

    公开(公告)日：2005-12-30

    申请号：MYPI9903986

    申请日：1999-09-14

    Applicant: BASF AG

    Inventor： FISCHER ROLF DR ,  LIANG SHELUE DR ,  PINKOS ROLF DR

    IPC: C07D307/08

    Abstract: IN A PROCESS FOR PREPARING THF (TETRAHYDROFURAN) BY REACTION OF A 1,4-BUTANEDIOL-CONTAINING REACTION MIXTURE OVER AN ACID CATALYST,THE REACTION MIXTURE COMPRISES FURTHER ALCOHOLS DIFFERENT FROM 1,4-BUTANEDIOL AND IS ESSENTIALLY FREE OF WATER.

    METHOD FOR PRODUCING 1,6-HEXANEDIOL.
    56.
    发明专利
    METHOD FOR PRODUCING 1,6-HEXANEDIOL. 未知

    公开(公告)号：MY119693A

    公开(公告)日：2005-06-30

    申请号：MYPI9805428

    申请日：1998-12-01

    Applicant: BASF AG

    Inventor： BREITSCHEIDEL BORIS ,  PINKOS ROLF DR ,  STEIN FRANK ,  LIANG SHELUE ,  FISCHER ROLF HARTMUTH

    IPC: C07C29/149 ,  C07B61/00 ,  C07C31/20

    Abstract: A PROCESS FOR PRODUCING 1, 6- HEXANEDIOL BY HYDROGENATION OF ADIPIC ESTERS AND / OR 6- HYDROXYCAPROIC ESTERS IN THE GAS PHASE AT ELEVATED TEMPERATURE AND ELEVATED PRESSURE IN THE PRESENCE OF CHROMIUM - FREE CATALYSTS COMPRISES HYDROGENATING A)OVER A CATALYST COMPRISING COPPER, MANGANESE AND ALUMINUM AS ESSENTIAL CONSTITUENTS OR OVER RANEY COPPER, B)AT A TEMPERATURE OF FROM 150 TO 230oC AND A PRESSURE OF FROM 10 TO 70 BAR C)AT A MOLAR RATIO OF HYDROGEN TO ESTER TO BE HYDROGENATED WITHIN THE RANGE FROM 150 : 1 TO 300 : 1, AND D)AT A CATALYST SPACE VELOCITY OF FROM 0.01 TO 0.3 KG OF C6 ESTER PER LITER OF CATALYST PER HOUR.

    57.
    发明专利
    未知

    公开(公告)号：DE19720606A1

    公开(公告)日：1998-12-10

    申请号：DE19720606

    申请日：1997-05-16

    Applicant: BASF AG

    Inventor： FISCHER ROLF DR ,  PINKOS ROLF DR ,  WULFF-DOERING JOACHIM DR

    IPC: C07C29/149 ,  C07B61/00 ,  C07C29/19 ,  C07C31/135 ,  C07C31/27 ,  C07C31/13

    Abstract: The invention relates to a method for producing alcohols containing cycloaliphatic groups by hydrogenating, in the presence of a catalyst, carboxylic acids having aromatic rings or anhydrides or esters thereof. According to said method, hydrogenation takes places in a single stage and the catalyst contains at least one element of the group comprising Pd, Ru and Pt as well as the element Re in metallic or oxidic form.

    Preparation of 1,6-hexan:diol and epsilon-caprolactone from carboxylic acid mixture
    58.
    发明专利
    Preparation of 1,6-hexan:diol and epsilon-caprolactone from carboxylic acid mixture 未知

    公开(公告)号：DE19647349A1

    公开(公告)日：1998-05-20

    申请号：DE19647349

    申请日：1996-11-15

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD DR ,  FISCHER ROLF DR ,  PINKOS ROLF DR ,  STEIN FRANK DR ,  RUST HARALD ,  BREITSCHEIDEL BODO DR

    IPC: C07C29/149 ,  C07D315/00 ,  C07C31/20 ,  C07C29/136 ,  C07C29/74 ,  C07C29/80 ,  C07C29/88 ,  C07C69/48 ,  C07C69/675 ,  C07D313/04

    Abstract: Preparation of 2,6-hexandiol and iota -caprolactone from a carboxylic acid mixture containing adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexandiols. The mixture is obtained as a by-product of the oxidation of cyclohexane into cyclohexanone and cyclohexanol with oxygen or oxygen-containing gases, water extraction, esterification and hydrogenation into hexandiol and cyclisation of 6-hydroxycaproic acid esters into caprolactone. Steps involved are: (a) esterification of the monocarboxylic and dicarboxylic acids in the aqueous reaction mixture with low molecular mass alcohols, (b) excess alcohol and low b.pt. substances are distilled off, (c) a second distillation step separates the mixture into an ester fraction substantially free of 1,4-cyclohexandiols and one containing at least the greater part of the 1,4-cyclohexandiols, (d) at least part of a substantially 6-hydroxycaproic acid ester stream is separated from the ester fraction in a third distillation stage, (e) the ester fraction from (d) from which the 6-hydroxycaproic acid ester was at least partially removed, is hydrogenated catalytically and 1,6-hexandiol is extracted by distillation and (f) the substantially 6-hydroxycaproic acid ester containing stream is heated above 200 deg C at reduced pressure so as to effect cyclisation. Pure iota -caprolactone is recovered by distillation. Preferably water is removed from the carboxylic acid mixture before esterification. Alcohol for esterification is either 1-3C (preferably MeOH) or 4-10C (preferably iso-BuOH or tert.-BuOH) and a variety of distillation, collection and separation arrangements are used depending on the relative b.pts. of the intermediate products involved. A Cu, Co and/or Re based catalyst is used for the hydrogenation step, or one of type CuaAlbZrcMndOx (a > 0, b > 0, c \- 0, d > 0, a > b/2, b > a/4, a > c, a > d and x = a number to balance the formula).

    Production of pyrrolidone and N-alkyl-pyrrolidone compounds
    60.
    发明专利
    Production of pyrrolidone and N-alkyl-pyrrolidone compounds 未知

    公开(公告)号：DE19626123A1

    公开(公告)日：1998-01-08

    申请号：DE19626123

    申请日：1996-06-28

    Applicant: BASF AG

    Inventor： PINKOS ROLF DR ,  LIANG SHELUE DR ,  FISCHER ROLF DR

    IPC: C07D207/26 ,  C07D207/267

    Abstract: A process for the production of pyrrolidones and N-alkyl-pyrrolidones (I) via reaction of ammonia or 1-20C alkylamines with psi -butyrolactone (GBL), where the GBL is obtained by reacting 2,5-dihydrofuran (optionally containing a small amount of 2,3-dihydrofuran) with water, and dehydrogenating in the presence of a hydrogenation catalyst. The process comprises reacting the dihydrofuran with water, H2 and ammonia or amines in one stage, i.e. without isolating GBL, at elevated temperature in the gas or liquid phase and in the presence of a hydrogenation catalyst with acid centres or a combination of a hydrogenation catalyst and a catalyst with acid centres.

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