Patents by Inventor Wolfgang Hölderich
Wolfgang Hölderich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4960894Abstract: Preparation of substituted pyridines of the general formula (I) ##STR1## by the reaction of acrolein and ammonia with alkanals or ketones of the general formula (II), the acetals of the alkanals,R.sup.2 --CO--CH.sub.2 --CO--R.sup.1 IIwhere R.sup.1 is hydrogen or an alkyl of from 1 to 12 carbon atoms, cycloalkyl, aryl, or arylalkyl and R.sup.2 is an alkyl or alkoxy radical; the reaction is carried out in the presence of zeolites.Type: GrantFiled: December 1, 1988Date of Patent: October 2, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Norbert Goetz
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Patent number: 4960954Abstract: Enol ethers of the general formula I ##STR1## are prepared by eliminating the radical R.sup.4 OH from acetals or ketals of the formula II ##STR2## where the substituents R.sup.1 and R.sup.2 are each independently of the other hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.8 cycloalkyl, C.sub.3 -C.sub.8 -cycloalkenyl, unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted aryl or C.sub.7 -C.sub.16 aralkyl,R.sup.3 is --CR.sup.5 (OR.sup.4).sub.2, --COOR.sup.4 or --COR.sup.4,R.sup.4 is C.sub.1 -C.sub.20 -alkyl, C.sub.7 -C.sub.20 -alkylaryl or C.sub.7 -C.sub.20 -aralkyl,R.sup.5 is hydrogen or C.sub.1 -C.sub.8 -alkyl,in a process which comprises performing the reaction in the presence of phosphoric acid and/or phosphates on a carrier material and/or phosphates and/or zeolites as catalysts.Type: GrantFiled: March 27, 1989Date of Patent: October 2, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Norbert Goetz, Leopold Hupfer, Walter Himmele
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Patent number: 4950763Abstract: Ketones of the general formula (I) ##STR1## where R.sup.1 and R.sup.2 independently of one another are each alkyl, cycyloalkyl, arylalkyl, aryl or hetaryl, and one or more of the radicals R.sup.1 and R.sup.2 carry one or more hydrogen atoms on the .alpha.-carbon atom, are prepared by reacting two carboxylic acids of the general formulae (IIa/IIb), R.sup.1 --COOH (IIa) and R.sup.2 --COOH (IIb) or by reacting a carboxylic acid R.sup.1 --COOH (IIa) and a ketone ##STR2## or by reacting a mixture of IIa, IIb and Ib, in the gas phase in the presence of a catalyst, by a process in which a catalyst is used whose active material contains at least 50% by weight of titanium dioxide having a specific surface area greater than 10 m.sup.2 /g.0.Type: GrantFiled: July 18, 1989Date of Patent: August 21, 1990Assignee: BASF AktiengesellschaftInventors: Charles Schommer, Klaus Ebel, Toni Dockner, Matthias Irgang, Wolfgang Hoelderich, Harald Rust
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Patent number: 4943667Abstract: Phenylethanols of the formula ##STR1## where R is hydrogen, alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, fluorine, trifluoromethyl or trifluoromethoxy, are prepared by reacting epoxides of the formula ##STR2## where R is as defined above, in the presence of hydrogen over zeolites and/or phosphates, doped with hydrogenating metal as catalysts, preferably over zeolites of the pentasil type.Type: GrantFiled: January 13, 1989Date of Patent: July 24, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Norbert Goetz, Leopold Hupfer
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Patent number: 4939280Abstract: 4-Oxaaldehydes of the formula ##STR1## are prepared by catalytic isomerization of 1,3-dioxanes by a process in which a 1,3-dioxane of the formula ##STR2## where R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are identical or different and are each hydrogen, a straight-chain or branched alkyl, alkenyl or alkynyl radical of not more than 18 carbon atoms, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl, aralkyl or alkenylaryl radical of 5 to 16 carbon atoms or a heterocyclic radical, and furthermore R.sup.1 and R.sup.2 and/or R.sup.4 and R.sup.5 together with the carbon atom to which they are bonded may form a cycloalkane, a cycloalkene or a heterocyclic structure, and the stated radicals may furthermore carry substituents which are inert under the reaction conditions, and R.sup.3 is hydrogen or straight-chain or branched alkyl, is isomerized using a phosphate as a catalyst.Type: GrantFiled: April 29, 1988Date of Patent: July 3, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Franz Merger, Helmut Lermer
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Patent number: 4933487Abstract: In an improved process for preparing 4-pentenates by isomerization, where isomeric pentenates are treated at elevated temperatures with zeolites and 4-pentenates are distilled out of the reaction mixture, the improvement comprises using pentenates in mixture with alkanols.Type: GrantFiled: March 22, 1989Date of Patent: June 12, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Heinrich Aichinger, Fritz Naeumann, Rolf Fischer
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Patent number: 4931564Abstract: Cyanopyridines of the formula ##STR1## are prepared by reacting acrolein and an alkanal ##STR2## or its acetal or ketone of the formula ##STR3## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen, alkyl of 1 to 6 carbon atoms or aryl and R.sup.4 is alkyl and n is 0-11, with ammonia in the presence of a zeolite as a catalyst. The reaction is preferably carried out in the gas phase.Type: GrantFiled: December 2, 1988Date of Patent: June 5, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Norbert Goetz
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Patent number: 4929733Abstract: N-heterocycles of the general formulae (I) and (II) ##STR1## where R.sup.1 and R.sup.4 to R.sup.9 are each hydrogen, alkyl, aryl, aralkyl, alkylaryl or cycloalkyl and R.sup.2 and R.sup.3 are each an alkyl, alkylaryl, substituted alkyl or cycloalkyl group, are prepared by a process in which an olefin of the formula (III) or (IV) ##STR2## where R.sup.2 to R.sup.9 have the above meanings, is reacted with NH.sub.3 or with a primary amine of the formula H.sub.2 NR.sup.1, where R.sup.1 has the above meanings, in the presence of a zeolite as a catalyst.Type: GrantFiled: June 17, 1988Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Michael Hesse, Wolfgang Hoelderich, Matthias Schwarzmann
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Patent number: 4929765Abstract: Phenylacetaldehydes of the general formula I ##STR1## where R.sup.1 to R.sup.5 are each independently of the others hydrogen, alkyl, alkoxy, halogen, haloalkyl, haloalkoxy or haloalkylthio, by catalytic rearrangement in the presence of a zeolite, are prepared by reacting an epoxy of the formula II or a phenylglycol of the formula III ##STR2## where Y and Z can be identical to or different from each other and are each hydroxyl, alkoxy, aryloxy or acyloxy, in the gas phase over a borosilicate zeolite catalyst at from 70.degree. to 200.degree. C. under reduced pressure.Type: GrantFiled: November 22, 1988Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Hubert Smuda, Wolfgang Hoelderich, Norbert Goetz, Hans-Gert Recker
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Patent number: 4929759Abstract: Amines are prepared from an olefin and ammonia or a primary or secondary amine, or a mixture of these, in the presence of a borosilicate or borogermanate zeolite of the pentasil type as a catalyst, by a process in which the amine obtained is isolated from the reaction mixture, and unreacted starting materials are recycled.Type: GrantFiled: October 6, 1989Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Volker Taglieber, Wolfgang Hoelderich, Rudolf Kummer, Wolf D. Mross, Guenter Saladin
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Patent number: 4929758Abstract: Amines are prepared from an olefin and ammonia or a primary and/or secondary amine in the presence of a zeolite catalyst of the pentasil type. Iron silicate zeolites of the pentasil type having an SiO.sub.2 /Fe.sub.2 O.sub.3 ratio greater than or equal to 10 are preferably used.Type: GrantFiled: June 13, 1988Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Volker Taglieber, Wolfgang Hoelderich, Rudolf Kummer, Wolf D. Mross, Guenter Saladin
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Patent number: 4925991Abstract: Dien-1-ols of the general formula I ##STR1## where the radicals R.sup.1 to R.sup.7 are identical to or different from one another and each is hydrogen or straight-chain or branched alkyl or 1-12 carbon atoms and n is 1-14, are prepared by dehydrating a hydroxylalkenyl tert-butyl ether of the formula II ##STR2## in the presence of an acidic catalyst at elevated tempertures and essentially at the same time splitting off the tert-butyl protective group, as is 9-hydroxydodec-10-enyl 1-tert-butyl ether which is useful as an intermediate for synthesizing 8,10-dodecadienol.Type: GrantFiled: August 24, 1988Date of Patent: May 15, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Mackenroth, Wolfgang Hoelderich, Rainer Becker, Walter Seufert
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Patent number: 4924000Abstract: Acylated imidazoles of the formula ##STR1## where R.sup.1 and R.sup.3 are each H, alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, R.sup.4 is H, alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, and R.sup.5 is alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl, alkylaryl or carboxyl, are prepared by reacting imidazoles of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, at least one of the radicals R.sup.1, R.sup.2 and R.sup.3 being hydrogen, and R.sup.4 is H, alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, with widely used acylating agents of the formula ##STR3## where R.sup.Type: GrantFiled: March 9, 1989Date of Patent: May 8, 1990Assignee: BASF AktiengesellschaftInventors: Michael Hesse, Wolfgang Hoelderich, Toni Dockner, Hermann Koehler
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Patent number: 4922025Abstract: Organophosphorus compounds are prepared by reacting an unsaturated compound, such as a striaght-chain, branched or cyclic olefin or a diene having conjugated or nonconjugated double bonds, with a phosphine by a process in which phosphine and/or phosphine-containing compounds are subjected to an addition reaction with the unsaturated compounds in the presence of a solid heterogeneous catalyst. Particularly suitable heterogeneous catalysts are zeolites and phosphates.Type: GrantFiled: July 8, 1988Date of Patent: May 1, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Michael Hesse, Matthias Schwarzmann
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Patent number: 4914241Abstract: Diamines of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, alkyl, aryl, alkoxy, aralkyl or cycloalkyl and X is a group of the formula(CR.sup.4 R.sup.5).sub.m (II)where R.sup.4 and R.sup.5 have the meanings given above for R.sup.1 and m is from 1 to 12, are prepared by a process in which a diamine of the formula ##STR2## where R.sup.1, R.sup.2 and X are the groups described above, is reacted with an olefin of the formula ##STR3## where R.sup.6 and R.sup.9 are each hydrogen or alkyl which is straight-chain in the .alpha.-position, in the presence of a zeolite as a catalyst.Type: GrantFiled: June 15, 1988Date of Patent: April 3, 1990Assignee: BASF AktiengesellschaftInventors: Michael Hesse, Wolfgang Hoelderich, Matthias Schwarzmann
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Patent number: 4906758Abstract: Pyrroles of the formula I ##STR1## are prepared by a process in which a dialkoxytetrahydrofuran of the formula II ##STR2## where R.sup.2 to R.sup.5 in the formulae (I) and (II) are identical or different and are each hydrogen, a straight-chain or branched alkyl or alkenyl radical of not more than 12 carbon atoms, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl or aralkyl radical of 6 to 16 carbon atoms, and two non-adjacent radicals R.sup.6 to R.sup.9 are alkoxy and the other two radicals R.sup.6 to R.sup.9 are hydrogen, is reacted with ammonia or a primary amine H.sub.2 NR.sup.1, where R.sup.1 in formula (I) is hydrogen, alkyl, aryl, alkylaryl, aralkyl or cycloalkyl, in the presence of an acidic, solid, heterogeneous catalyst. Zeolites, for example those of the pentasil type or faujasite type, or phosphates, acidic oxides, phosphoric acid or boric acid on a carrier can be used as the solid heterogeneous catalysts.Type: GrantFiled: August 12, 1988Date of Patent: March 6, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Michael Hesse, Hardo Siegel
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Patent number: 4904812Abstract: Unsaturated nitriles are prepared from lactones and NH.sub.3 by a process in which the reaction of the lactone with NH.sub.3 is carried out in the presence of a zeolite as a catalyst.A particularly suitable starting material is caprolactone and particularly suitable catalysts are zeolites of the pentasil type, for example aluminosilicate zeolites.Type: GrantFiled: December 7, 1988Date of Patent: February 27, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Matthias Schwarzmann
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Patent number: 4904806Abstract: Tetrahydrofurans are prepared in the gas phase from butane-1,4-diols which may be substituted by alkyl, alkenyl and/or aryl radicals in the carbon skeleton. The reaction is carried out in the presence of a borosilicate and/or iron silicate zeolite, preferably of the pentasil type, as catalyst.Other catalysts which may be used are zeolites doped with alkali metals and/or alkaline earth metals and/or transition metals and/or rare earth metals and/or noble metals.Type: GrantFiled: September 30, 1988Date of Patent: February 27, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Matthias Schwarzmann
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Patent number: 4891451Abstract: Vinyl ethers of the formula (I) ##STR1## where R.sup.1 to R.sup.3 are identical or different and are each hydrogen, a straight-chain or branched alkyl or alkenyl radical of not more than 12 carbon atoms, halogen-substituted alkyl, a cycloalkyl or cycloalkenyl radical of 5 to 8 carbon atoms, an aryl, alkylaryl, alkenylaryl, aralkyl or aralkenyl radical of 6 to 16 carbon atoms, halogen-substituted aryl or a heterocyclic radical and furthermore R.sup.1 and R.sup.2 or R.sup.1 and R.sup.3, together with the carbon atom to which they are bonded, may form a cycloalkane, cycloalkene or heterocyclic structure, and R.sup.4 is alkyl, alkylaryl or aralkyl, are prepared by a process in which an alcohol is eliminated from an acetal or ketal of the formula (II) ##STR2## where R.sup.1 to R.sup.4 have the above meanings, in the presence of borosilicate and/or iron silicate zeolites as catalysts.Type: GrantFiled: June 30, 1988Date of Patent: January 2, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Norbert Goetz, Leopold Hupfer
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Patent number: 4885395Abstract: Alpha,beta-unsaturated ketones of the formula (I) ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, alkyl, alkenyl of 1 to 12 carbon atoms, cycloalkyl, aryl, aralkyl or alkylaryl, are prepared by converting the corresponding .alpha.-hydroxy, alkoxy or carboxy compound in the presence of an acidic catalyst.Preferred starting materials are 3-methyl-3-hydroxy-butan-2-one, 3-methyl-3-hydroxypentan-2-one and 3-pentamethylene-3-hydroxypropan-2-one, and preferred catalysts are zeolites of the pentasil type.Type: GrantFiled: September 25, 1987Date of Patent: December 5, 1989Assignee: BASF AktiengsellschaftInventors: Wolfgang Hoelderich, Kurt Schneider, Leopold Hupfer