-
公开(公告)号:CA2381209A1
公开(公告)日:2001-02-15
申请号:CA2381209
申请日:2000-07-21
Applicant: BASF AG
Inventor: BOTZEM JORG , SCHIERLE-ARNDT KERSTIN , PUTTER HERMANN
IPC: C07C43/315 , C07C47/277 , C25B3/23 , C25B3/02
Abstract: A method for producing compounds which are oxidized in an alpha position by electrochemical reaction with alcohol in the presence of an auxiliary electrolyte and catalytic amounts of a metal salt.
-
公开(公告)号:CA2321847A1
公开(公告)日:1999-09-02
申请号:CA2321847
申请日:1999-02-13
Applicant: BASF AG
Inventor: HANNEBAUM HEINZ , PUTTER HERMANN , WEIPER-IDELMANN ANDREAS
IPC: C07C45/42 , C07C45/51 , C07C45/59 , C07C47/542 , C07D307/88 , C25B3/25 , C25B3/04
Abstract: The invention relates to a method for the selective hydrolysis of acetals in the presence of phthalides. According to said method a mixture (M) containing a) a phthalide of the formula (I) and b) an acetal or ketal of the formula (II) is reacted in the presence of between 1 and 10 mol water relative to the quantity of acetals or ketals of formula (II) at temperatures of between 10 and 200 ~C, whereby the acetal or ketal of formula (II) is hydrolysed to the corresponding aldehyde or ketone. The substituents R1-R8 have the meanings given in the description.
-
公开(公告)号:ES2133197T3
公开(公告)日:1999-09-01
申请号:ES96931067
申请日:1996-09-10
Applicant: BASF AG
Inventor: PUTTER HERMANN , HANNEBAUM HEINZ
Abstract: PCT No. PCT/EP96/03970 Sec. 371 Date May 11, 1998 Sec. 102(e) Date May 11, 1998 PCT Filed Sep. 10, 1996 PCT Pub. No. WO97/10370 PCT Pub. Date Mar. 20, 1997A stacked plate cell having serially connected stacked electrodes is described, at least one stacked electrode consisting of a graphite felt plate, a carbon felt plate, a web having a carbon-covered starting material contact surface or a porous solid having a carbon-covered starting material contact surface or comprising such a material.
-
公开(公告)号:CA2303985A1
公开(公告)日:1999-04-01
申请号:CA2303985
申请日:1998-09-05
Applicant: BASF AG
Inventor: PUTTER HERMANN , BAUMANN DIETER , HANNEBAUM HEINZ
IPC: C25B3/25 , C07D307/88 , C25B3/04
Abstract: The invention relates to a method for producing phthalides in which I) phthalate acid or phthalate acid derivatives which are dissolved in an electrolyte are reduced on a cathode in a non-divided electrolysis cell in which the carboxy groups can be replaced by units and can be derived from the carboxy groups in a condensation reaction. One or more hydrogen atoms of the ophenylene unit can be substituted by inert residues. II) Once the reaction has reached a given stage at which the molar ratio relationship (M) which is formed from the portion of phthalide and the sum of the portion of phthalide, phthalate acid or the phthalate acid derivatives in the electrolyte amounts to 0.8:1 to 0.995:1, the electrolyte from the electrolysis cell is removed and III) the phthalide is crystallized out of the electrolyte and separated from the original solution optionally after distillation reprocessing of said electrolyte.
-
公开(公告)号:ES2242072T3
公开(公告)日:2005-11-01
申请号:ES02776994
申请日:2002-09-05
Applicant: BASF AG
Inventor: PUTTER HERMANN , FISCHER ANDREAS
Abstract: Procedimiento para la obtención de ortoésteres de la fórmula general I teniendo los restos el siguiente significado. R1 :hidrógeno, alquilo con 1 a 20 átomos de carbono, alquenilo con 2 a 20 átomos de carbono, alquinilo con 2 a 20 átomos de carbono, cicloalquilo con 3 a 12 átomos de carbono, cicloalquilo con 4 a 20 átomos de carbono-alquilo o arilo con 4 a 10 átomos de carbono, R2, R3: alquilo con 1 a 20 átomos de carbono, cicloalquilo con 3 a 12 átomos de carbono, y cicloalquilo con 4 a 20 átomos de carbono-alquilo, o R2 y R3 forman conjuntamente alquileno con 2 a 10 átomos de carbono, R4: alquilo con 1 a 4 átomos de carbono, oxidándose un compuesto de la fórmula general II en la que los restos R1 a R3 tienen el mismo significado que en la fórmula general I, y R5 significa un resto heterocicloalquilo saturado o insaturado de 5 o 6 eslabones, o un resto heterocicloarilo con hasta 2 heteroátomos, seleccionados a partir del grupo N, O y S, estando enlazado este resto a través de un átomo decarbono, que se encuentra en la proximidad de un heteroátomo, a la parte restante de la molécula, en presencia de alcoholes con 1 a 4 átomos de carbono (alcoholes A) por vía electroquímica.
-
公开(公告)号:ES2238501T3
公开(公告)日:2005-09-01
申请号:ES01994702
申请日:2001-11-22
Applicant: BASF AG
Inventor: PUTTER HERMANN , FISCHER ANDREAS
Abstract: Procedimiento para la preparación de acetales de di- (alquilo C1 a C6) de formaldehído, ésteres de tri- (alquilo C1 a C6) del ácido orto-fórmico, acetales de di- (alquilo C1 a C6) de acetaldehído o ésteres de tri- (alquilo C1 a C6) del ácido orto-acético (compuestos 1) mediante la oxidación anódica de 1, 2-di-(alcoxil C1 a C6)-etano o 1, 2-di-(alcoxil C1 a C6)-propano, 1, 1, 2, 2-tetra-(alcoxil C1 a C6)-etano o 1, 1, 2, 2-tetra-(alcoxil C1 a C6)-propano, o 2, 3-di- (alcoxil C1 a C6)-butano (compuestos II) en presencia de un alcohol alcoxílico C1 a C6 (compuestos III), en el que como despolarizador catódico se emplea un compuesto orgánico habitual (compuestos IV), que es apropiado para la reducción electroquímica y en el que la oxidación anódica y la reducción catódica se realizan en una celda de electrólisis no dividida en presencia de alcoholes alquílicos C1 a C6.
-
公开(公告)号:ES2199850T3
公开(公告)日:2004-03-01
申请号:ES00956251
申请日:2000-07-21
Applicant: BASF AG
Inventor: PUTTER HERMANN , SCHIERLE-ARNDT KERSTIN , BOTZEM JORG
IPC: C07C43/315 , C07C47/277 , C25B3/23 , C25B3/02
Abstract: A method for producing compounds which are oxidized in an alpha position by electrochemical reaction with alcohol in the presence of an auxiliary electrolyte and catalytic amounts of a metal salt.
-
公开(公告)号:CA2405920A1
公开(公告)日:2003-04-05
申请号:CA2405920
申请日:2002-10-01
Applicant: BASF AG
Inventor: AUST NICOLA CHRISTIANE , PUTTER HERMANN , BOTZEM JORG , FISCHER ANDREAS , HEYDRICH GUNNAR
IPC: C07B61/00 , C07C41/50 , C07C43/303 , C07C47/198 , C07C47/127 , C07C45/64
Abstract: A process is described fox preparing diacetals of glyoxal by reacting from 40 to 75% by weight aqueous glyoxal with monohydric alcohols in the presence of an acid catalyst, which comprises leaving a liquid mixture which, at the beginning of the reaction, comprises alcohol and glyoxal in a molar ratio of at least 15:1 and also water in a concentration of not more than 8% by weight in contact with the acid catalyst until concentration in the reaction mixture of the diacetal formed reaches at least 70% of the equilibrium concentration without more than 5% by weight of the alcohol used having already been distilled off.
-
公开(公告)号:ES2175793T3
公开(公告)日:2002-11-16
申请号:ES98948912
申请日:1998-09-05
Applicant: BASF AG
Inventor: PUTTER HERMANN , BAUMANN DIETER , HANNEBAUM HEINZ
IPC: C25B3/25 , C07D307/88 , C25B3/04
Abstract: A process for preparing phthalides byI. reducing phthalic acid or phthalic acid derivatives, where the carboxyl groups may be replaced by units which can be derived from the carboxyl groups by a condensation reaction and where one or more of the hydrogens of the o-phenylene unit may be substituted by inert radicals, at a cathode in a undivided electrolytic cell and dissolved in an electrolyte,II. discharging the electrolyte from the electrolytic cell when the reaction has proceeded to the stage where the molar ratio (M), formed by the proportion of phthalide and the sum of the proportions of phthalide and phthalic acid of phthalic acid derivatives in the electrolyte, is from 0.8:1 to 0.995:1, andIII. crystallizing the phthalides from the electrolyte and removing them from the mother liquor, if appropriate after distillative work-up of the electrolyte is described.
-
公开(公告)号:ES2160323T3
公开(公告)日:2001-11-01
申请号:ES97903335
申请日:1997-02-20
Applicant: BASF AG
Inventor: MULLER ULRICH , BROCKER FRANZ JOSEF , GROSCH GEORG HEINRICH , PUTTER HERMANN , SCHULZ MICHAEL , RIEBER NORBERT
IPC: B01J21/06 , B01J23/22 , B01J29/04 , B01J29/89 , B01J35/04 , B01J35/06 , B01J37/02 , C01B15/029 , C01B21/14 , C07D301/12
Abstract: PCT No. PCT/EP97/00804 Sec. 371 Date Aug. 26, 1998 Sec. 102(e) Date Aug. 26, 1998 PCT Filed Feb. 20, 1997 PCT Pub. No. WO97/31711 PCT Pub. Date Sep. 4, 1997The present invention relates to a gauze catalyst based on titanium or vanadium zeolites and inert gauze fabrics which is suitable for accelerating oxidation reactions such as epoxidation of olefins, hydrogen peroxide production or hydroxylamine synthesis.
-
-
-
-
-
-
-
-
-