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公开(公告)号:JP2003261546A
公开(公告)日:2003-09-19
申请号:JP2002355604
申请日:2002-12-06
Applicant: BASF AG
Inventor: RUST HARALD , BURKART KIRSTEN , FAUST TILLMANN , HENKELMANN JOCHEM , KINDLER ALOIS , KNOLL CHRISTIAN , MOHRY ANDRE
IPC: C07D213/66 , B01D3/14 , B01J14/00 , C07D213/67 , C07D263/42
Abstract: PROBLEM TO BE SOLVED: To provide a new process for the continuous preparation of a 5- alkoxy-substituted oxazole in high yield and high space-time yield. SOLUTION: The process for the continuous preparation of a 5-alkoxy- substituted oxazole of formula I (R 1 is a substituted or unsubstituted 1-6C alkyl; and R 2 is H or a substituted or unsubstituted 1-6C alkyl) comprises the conversion of a continuously charged α-isocyanoalkanoic acid ester of formula II to the 5-alkoxy-substituted oxazole of formula I in a reactor at ≥80°C in the presence of an assistant selected from continuously charged alcohols and esters and the continuous discharge of the reaction product from the reactor. COPYRIGHT: (C)2003,JPO
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公开(公告)号:JP2003206249A
公开(公告)日:2003-07-22
申请号:JP2002352856
申请日:2002-12-04
Applicant: BASF AG
Inventor: FUNKE FRANK DR , GERLACH TILL , EBEL KLAUS , UNVERRICHT SIGNE , HAESE FRANK , BURKART KIRSTEN , GOEBBEL HANS-GEORG
IPC: C07B61/00 , C07C29/17 , C07C31/125
Abstract: PROBLEM TO BE SOLVED: To provide an economical method of producing tetrahydrogeraniol by reaction or use of the residues obtained during the production of linalool, citronellal, citronellol or geraniol/nerol. SOLUTION: The production mixture and distillation residue obtained from the syntheses of linalool, citronellal, or geraniol/nerol is directly subjected to the catalytic hydrogenation. COPYRIGHT: (C)2003,JPO
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公开(公告)号:JP2003267958A
公开(公告)日:2003-09-25
申请号:JP2002355822
申请日:2002-12-06
Applicant: BASF AG
Inventor: RUST HARALD , BURKART KIRSTEN , FAUST TILLMANN , HENKELMANN JOCHEM , KINDLER ALOIS , KNOLL CHRISTIAN , BECKER MICHAEL
IPC: B01D3/14 , B01J14/00 , C07D213/67 , C07D263/42
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a 5-alkoxy-substituted oxazole, especially a 4-methyl-5-alkoxy-substituted oxazole and further a method for producing a pyridoxine derivative. SOLUTION: The method for producing the substituted oxazole is carried out as follows. An α-isocyanoalkanoic acid ester is converted into the 5-alkoxy- substituted oxazole in the presence of an assistant composed of an alcohol or an ester at >80°C. The resultant 5-alkoxy-substituted oxazole is taken out of the reactional mixture simultaneously with the conversion. COPYRIGHT: (C)2003,JPO
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公开(公告)号:JP2003201283A
公开(公告)日:2003-07-18
申请号:JP2002227742
申请日:2002-08-05
Applicant: BASF AG
Inventor: RUST HARALD , BURKART KIRSTEN , FAUST TILLMANN , HENKELMANN JOCHEM , KINDLER ALOIS , KNOLL CHRISTIAN , MOHRY ANDRE
IPC: C07D213/67 , C07D263/42
Abstract: PROBLEM TO BE SOLVED: To provide a method for continuously producing a 5-alkoxy-substituted oxazole and a method for producing a pyridoxine derivative by using the same. SOLUTION: This method for obtaining a pyridoxine derivative is provided by converting an α-isocyanoalkanoic acid ester expressed by the formula II in the presence of continuously supplied base at ≥80°C temperature to a 5- alkoxy-substituted oxazole I, taking it out from a reactor at the same time with the reaction, performing a reaction of the compound I with a compound VI to make a compound VII, and acid-treating it to obtain a pyridoxine derivative IX (in formulae, R 1 is an alkyl, R 2 is H or an alkyl, R 3 , R 4 are each independently a protection group of hydroxy group). COPYRIGHT: (C)2003,JPO
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公开(公告)号:JP2003176272A
公开(公告)日:2003-06-24
申请号:JP2002227292
申请日:2002-08-05
Applicant: BASF AG
Inventor: RUST HARALD , BURKART KIRSTEN , FAUST TILLMANN , HENKELMANN JOCHEM , KINDLER ALOIS , KNOLL CHRISTIAN , BECKER MICHAEL
IPC: C07D233/70 , C07D213/67 , C07D263/42
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a 5-alkoxy-substituted oxazole and a method for producing a pyridoxine derivative. SOLUTION: The 5-alkoxy-substituted oxazole is obtained by converting an α-isocyano alkylic acid ester in the presence of a base at >80°C and separating the 5-alkoxy-substituted oxazole from the reaction mixture simultaneously with the converting reaction, and the pyridoxine derivative is obtained by converting an amino acid into an amino acid ester, converting the obtained into a formamido acid ester, converting the obtained into an α-isocyanoalkyl acid ester, converting the obtained into a 5-alkoxy-substituted oxazole in the presence of a base at >80°C and separating the 5-alkoxy-substituted oxazole from the reaction mixture simultaneously with the converting reaction, reacting the obtained 5-alkoxy-substituted oxazole with a protective diol to obtain an Diels-Alder adduct and treating the obtained with an acid and removing the protective group to convert into the pyridoxine derivative. COPYRIGHT: (C)2003,JPO
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公开(公告)号:JP2000159716A
公开(公告)日:2000-06-13
申请号:JP35637199
申请日:1999-11-10
Applicant: BASF AG
Inventor: BURKART KIRSTEN , GUTH JOSEF , LETZELTER THOMAS , SCHWEINZER JUERGEN , STERZEL HANS-JOSEF
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an orthoester in a high yield, by reacting a trihaloalkane with an alkali metal alkoxide in the presence of a corresponding alcohol using a slurry of the alkali metal alkoxide. SOLUTION: This method for producing an orthoester comprises reacting (A) a 1,1,1-trihaloalkane (for example, 1,1,1-trihalomethane) with (B) an alkali metal alkoxide, for example, sodium methoxide, in the presence of a corresponding alcohol using a slurry (a suspension of the solid alkali metal alkoxide in the alcohol) by use of, for example, a blade drier, a kneader and a discotherm reactor. The slurry is preferably used in a state that a weight ratio of the solid component to the dissolved alkali metal alkoxide is at least 0.4. The reaction is preferably carried out using the component A in an amount of at most 1.1 mol per 3 mol of the component B.
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公开(公告)号:CA2418972C
公开(公告)日:2010-03-23
申请号:CA2418972
申请日:2001-08-16
Applicant: BASF AG
Inventor: ISAK HEINZ , SENDHOFF NORBERT , SCHUTZ FRANZ , THERRE JORG , DROGEMULLER MICHAEL , FRANKE DIRK , MUNZINGER MANFRED , WECK ALEXANDER , BURKART KIRSTEN
IPC: C07D285/34 , A01N25/12 , A01N43/88
Abstract: A method for the production of a particle-containing preparation of tetrahydro-3,5-dimethyl-1,3,5-thiadiazin-2-thione, by combination of a first aqueous solution containing methylammonium-N-methyldithiocarbamate with a second solution containing formaldehyde and separation and drying of the solid formed is disclosed. The invention is characterised in that the first and second solutions are combined such that over the duration of the reaction the ratio of the concentration of dithiocarbamate functions and formaldehyde in the reaction mixture remains essentially constant over time.
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公开(公告)号:DE50211588D1
公开(公告)日:2008-03-13
申请号:DE50211588
申请日:2002-07-26
Applicant: BASF AG
Inventor: RUST HARALD , BURKART KIRSTEN , FAUST TILLMANN DR , HENKELMANN JOCHEM DR , KINDLER ALOIS DR , KNOLL CHRISTIAN DR , MOHRY ANDRE DR
IPC: C07D263/42
Abstract: Continuous production of 5-alkoxy oxazoles (I) comprises heating an alkyl alpha -isocyanoalkanoate ester (II) at a temperature above 80 degrees C in the presence of an auxiliary agent and withdrawing the product from the reactor. Continuous production of 5-alkoxy oxazoles of formula (I) comprises heating an alkyl alpha -isocyanoalkanoate ester of formula (II) at a temperature above 80 degrees C in the presence of an auxiliary agent and withdrawing the product from the reactor. R1 = optionally substituted 1-6C alkyl; R2 = H or optionally substituted 1-6C alkyl. An Independent claim is also included for a process for producing pyridoxine derivatives of formula (IX), comprising: (1) converting an amino acid of formula (III) to an ester of formula (IV); (2) converting (IV) to a formamido ester of formula (IV); (3) converting (IV) to (II); (4) converting (II) to (I) as above; (5) reacting (I) with a protected diol of formula (VI) to form a Diels-Alder adduct of formula (VII); and (6) converting (VII) to (IX) by acid treatment and deprotection. R3, R4 = protecting groups or together form a protecting group.
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公开(公告)号:ES2243648T3
公开(公告)日:2005-12-01
申请号:ES02027070
申请日:2002-12-03
Applicant: BASF AG
Inventor: FUNKE FRANK DR , GERLACH TILL DR , EBEL KLAUS DR , UNVERRICHT SIGNE DR , HAESE FRANK DR , BURKART KIRSTEN
IPC: C07B61/00 , C07C29/17 , C07C31/125
Abstract: Procedimiento para la obtención de tetrahidrogeraniol, caracterizado porque las mezclas de productos, o bien residuos de destilación que se producen en la síntesis de linalool, citronelal, citronelol, o geraniol/nerol, se alimentan directamente al hidrogenado catalítico.
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公开(公告)号:SI1309578T1
公开(公告)日:2004-08-31
申请号:SI200130091
申请日:2001-08-16
Applicant: BASF AG
Inventor: ISAK HEINZ , SENDHOFF NORBERT , SCHUETZ FRANZ , THERRE JOERG , DROEGEMUELLER MICHAEL , FRANKE DIRK , MUNZINGER MANFRED , WECK ALEXANDER , BURKART KIRSTEN
IPC: C07D285/34
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