公开(公告)号：JPH1087520A

公开(公告)日：1998-04-07

申请号：JP22802197

申请日：1997-08-25

Applicant: BASF AG

Inventor： EIERMANN MATTHIAS DR ,  EBEL KLAUS DR

IPC: B01J27/053 ,  B01J27/138 ,  C07B61/00 ,  C07C17/02 ,  C07C17/08 ,  C07C19/075

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an alkyl bromide, enabling to profitably obtain the compound in an improved yield and/or at an improved reaction rate and at a low cost, by reacting an olefin with aqueous hydrobromic acid in the presence of a specific catalyst. SOLUTION: This method for producing an alkyl bromide comprises reacting (A) an olefin excluding conjugated dienes and enynes with (B) aqueous hydrobromic acid. Therein, an element M or a compound of the formula: Mw Lx Ay (H2 O)z [M is an element belonging to the group VB, IIIA, etc., or its compound; (w), (y) are each >=1; (x), (z) are each >=0] as a catalyst. The component A is preferably cyclopentene or cyclohexene. The catalyst is preferably zinc bromide, etc. The reaction is preferably carried out in a component A:B molar ratio of 0.2:1 to 1:1, in a catalyst : component A molar ratio of 0.1-10, at the atmosphere and at a temperature of 0 deg.C to the boiling point of the reaction mixture by a batch method. The component B is preferably used as an aqueous solution having a concentration of 40-65wt.%.

公开(公告)号：JPH1087521A

公开(公告)日：1998-04-07

申请号：JP23232197

申请日：1997-08-28

Applicant: BASF AG

Inventor： EIERMANN MATTHIAS DR ,  EBEL KLAUS DR

IPC: B01J31/16 ,  C07B61/00 ,  C07C17/02 ,  C07C17/08 ,  C07C19/075

Abstract: PROBLEM TO BE SOLVED: To provide a method for simply producing an alkyl bromide at a low cost, by concentrating aqueous hydrobromic acid during the reaction of an olefin with the aqueous hydrobromic acid. SOLUTION: In this method for producing an alkyl bromide, at the time of producing the alkyl bromide from a mixture containing aqueous hydrobromic acid and an olefin, the existing aqueous hydrobromic acid is concentrated during the reaction. Preferably, the concentration of the aqueous hydrobrmic acid is carried out by a method where the water is removed in the azeotropic mixture form of the water with an organic compound contained in the reaction mixture. The organic compound for forming the azeotropic mixture with the water is prferably cyclopentane, cyclohexane, etc. The reaction is preferably carried at 0 deg.C to the boiling point of the reaction mixture under the atmospheric pressure under the atmospheric pressure, while the reaction mixture is stirred with a mechanical stirring device. The hydrobromic acid is preferably used as an aqueous solution having a concentration of 40-65wt.%. The olefin : hydrobromic acid molar ratio is preferably 0.2:1 to 5:1.

公开(公告)号：JP2002114742A

公开(公告)日：2002-04-16

申请号：JP2001285721

申请日：2001-09-19

Applicant: BASF AG

Inventor： EIERMANN MATTHIAS DR ,  EBEL KLAUS DR

IPC: C07C201/06 ,  C07B43/02 ,  C07B61/00 ,  C07C201/08 ,  C07C205/06

Abstract: PROBLEM TO BE SOLVED: To provide an alternative method for nitrating an aromatic hydrocarbon affording high conversion. SOLUTION: This method for nitrating an aromatic hydrocarbon comprises reaction of the aromatic hydrocarbon with a nitrogen oxide selected from the group consisting of NO, N2O3, NO2 and N2O4 and an oxygen-containing gas stream in the presence of a heterogeneous oxide catalyst; wherein >=0.1 mol%, based on the aromatic hydrocarbon, of water is present at the start of the reaction.

公开(公告)号：JP2000178251A

公开(公告)日：2000-06-27

申请号：JP35934099

申请日：1999-12-17

Applicant: BASF AG

Inventor： GROENING CARSTEN DR ,  KEMPER REINHARD ,  FREDE MARKUS DR ,  EBEL KLAUS DR

IPC: C07D241/06 ,  B01J23/44 ,  C07B61/00 ,  C07D207/34

Abstract: PROBLEM TO BE SOLVED: To produce a 2,4-dimethyl-3,5-bisalkoxycarbonylpyrrole by enabling operations under milder conditions than those of a conventional technique and avoidance of the formation of by-products. SOLUTION: An alkyl acetoacetate is nitrosated to produce an alkyl 2- nitrosoacetoacetate, which is then reduced with hydrogen in the presence of a noble metal catalyst to form an amine. The resultant amino compound without isolation is condensed in the presence of the corresponding alkyl acetoacetate without undergoing the nitrosation to produce 2,4-dimethyl-3,5- bisalkoxycarbonylpyrrole.

公开(公告)号：JP2000327666A

公开(公告)日：2000-11-28

申请号：JP2000124501

申请日：2000-04-25

Applicant: BASF AG

Inventor： SLANY MICHAEL ,  SCHULZ MICHAEL DR ,  SCHAEFER MARTIN ,  ZELLER EDGAR DR ,  EBEL KLAUS DR

IPC: C07D263/08 ,  C07D233/76 ,  C07D263/44

Abstract: PROBLEM TO BE SOLVED: To easily produce a cyclic anhydride of hydantoin or amino acid useful as an intermediate for the production of an essential amino acid such as methionine by reacting an aldehyde with urea, etc., and CO in the presence of a transition metal catalyst. SOLUTION: The objective compound of formula II is produced by reacting an aldehyde of formula R-CHO [R is a (substituted)alkyl or a (substituted)aryl] with CO and a compound of formula I [R2 is NH2 or the like; R3 is H, a (substituted)alkyl, a (substituted)aryl or the like] in the presence of a transition metal catalyst (e.g. Fe or Pd). The catalyst is preferably a mixture of a palladium compound (e.g. PdBr2), an ionic compound (e.g. phosphonium bromide) and an acid (e.g. sulfuric acid). The reaction is carried out preferably by using a solvent such as N-methylpyrrolidone under a pressure of 0.1-200 bar. This synthetic process does not form a by-produced salt to be disposed.

公开(公告)号：JP2000178250A

公开(公告)日：2000-06-27

申请号：JP35933999

申请日：1999-12-17

Applicant: BASF AG

Inventor： GROENING CARSTEN DR ,  KEMPER REINHARD ,  FREDE MARKUS DR ,  EBEL KLAUS DR

IPC: C07D207/32 ,  C07D207/323

Abstract: PROBLEM TO BE SOLVED: To produce 2,4-dimethylpyrrole under much milder conditions of slighter aggressiveness thin well-known conditions according to a conventional technique. SOLUTION: A dicarboxylic acid alkyl ester which is a 2,4-dimethyl-3,5- bisalkoxycarbonylpyrrole is refluxed together with an aqueous solution of an alkali metal hydroxide at 10-30% concentration, advantageously a sodium hydroxide solution until a solid is converted into a solution and the reactional mixture is then neutralized with an acid and further refluxed until the decarbocylation is completed, i.e., the gas evolution is stopped.

公开(公告)号：JPH11315044A

公开(公告)日：1999-11-16

申请号：JP3149699

申请日：1999-02-09

Applicant: BASF AG

Inventor： EIERMANN MATTHIAS ,  EBEL KLAUS DR ,  JOERG BOTZEN

IPC: B01J27/182 ,  C07B61/00 ,  C07C45/52 ,  C07C45/65 ,  C07C45/66 ,  C07C45/67 ,  C07C45/82 ,  C07C49/587 ,  C07C49/593 ,  C07C49/597 ,  C07C49/603 ,  C07C49/607 ,  C25B3/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a 2-cycloalkenone by an elimination reaction from an alkoxycycloalkanone or a hydroxycycloalkanone ketal under an acidic heterogeneous catalytic action, capable of simply producing the 2-cycloalkenone in a high yield in one process. SOLUTION: This method for producing a 2-cycloalkenone of formula III comprises subjecting a 2-alkoxycycloalkanone of formula I [(n) is 0-20; (m) is 0-3; R is an alkyl, an alkylaryl, an aryl, an arylalkyl, an alkenyl or an alkynyl; R' is an alkyl, an alkenyl or the like] or 2-hydroxycycloakanone ketal or a mixture of the compound of formula I with the compound of formula II to an elimination reaction in the presence of an acidic heterogeneous catalyst in a gas phase. The acidic heterogeneous catalyst preferably contains at least one oxide or phosphoric salt, or a mixture of the oxide with the phosphoric salt, or the mixed oxides of the groups 3-6 and the groups 13-15 elements in the periodic table.

公开(公告)号：JPH1087632A

公开(公告)日：1998-04-07

申请号：JP22248497

申请日：1997-08-19

Applicant: BASF AG

Inventor： HIEBER GISELA DR ,  EBEL KLAUS DR ,  SCHROEDER JUERGEN DR ,  DOCKNER TONI DR ,  GROENING CARSTEN DR ,  RUGE BERND DR

IPC: C07D233/58 ,  B01J21/12 ,  B01J27/16 ,  C07D233/54 ,  C07D233/68 ,  C07D233/90 ,  C07D233/91 ,  C07D233/92 ,  C07D235/06 ,  C07D235/08

Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound useful as a precursor substance or an intermediate for producing dyestuffs, fiber auxiliaries, plastics, etc., by directly using an aqueous imidazole phase obtained on the synthesis of the substituted imidazole. SOLUTION: The aqueous phase of an imidazole compound of formula I (R , R , R are each H, a halogen, NO2 , etc.) is reacted with a compound of the formula: R -O-R (R is a 1-20C hydrocarbon; R is H or R ) in the presence of a catalyst such as the oxide of a metal belonging to the subgroup 4 in the main groups 2, 3, 4 in the periodic table, a phosphate salt, etc., at 220-550 deg.C to produce the substituted imidazole of formula II. The catalyst is used in the form of a fixed bed, and an advantageous catalyst comprises 40-99wt.% of SiO2 and 1-60wt.% of H3 PO4 , or comprises 70-90wt.% of Al2 O3 and 10-30wt.% of SiO2 . Water and the compound of formula I are used in amounts of 99.9-0.1wt.% and 0.1-99.9wt.%, especially advantageously 40-10wt.% and 60-90wt.%, respectively, in the reaction. The reaction temperature is 200-550 deg.C, especially advantageously 280-420 deg.C.

公开(公告)号：JPH1045826A

公开(公告)日：1998-02-17

申请号：JP10026797

申请日：1997-04-17

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  HAEHNLE HANS-JOACHIM DR

IPC: C07C233/03 ,  C08F8/00 ,  C08F8/12 ,  C08F20/42

Abstract: PROBLEM TO BE SOLVED: To obtain a polymer capable of industrially, simply and inexpensively producing a polyamide and a polyamine by carrying out catalytic reaction of a nitrile-containing polymer. SOLUTION: A nitrile containing polymer (preferably acrylonitrile homopolymer or copolymer) is subjected to catalytic reaction in the presence of hydrogen, carbon monoxide and/or carbon monoxidereleasing compound (preferably formic acid or its derivative). Furthermore, a group I metal or group IV to X metal or metal compound in the periodic table, e.g. iron pentacarbonyl is preferably used as the catalyst and a molar ratio of hydrogen to carbon monoxide is preferably (4:1) to (0.25:1) and a molar ratio of carbon monoxide to nitrile group is preferably (1:1) to (1,000:1) and a molar ratio of hydrogen to nitrile group is preferably (2:1) to (1,000:1).

公开(公告)号：EP0802205A3

公开(公告)日：1998-11-11

申请号：EP97106077

申请日：1997-04-14

Applicant: BASF AG

Inventor： EBEL KLAUS DR ,  HAEHNLE HANS-JOACHIM DR

IPC: C07C233/03 ,  C08F8/00 ,  C08F8/12 ,  C08F20/42

CPC classification number: C08F8/04 ,  C08F120/44 ,  C08F8/44 ,  C08F8/12

Abstract: Polymere, die N-substituierte Formamidstruktureinheiten enthalten, erhältlich durch katalytische Umsetzung von nitrilgruppenhaltigen Polymeren in Gegenwart von Wasserstoff, Kohlenmonoxid und/oder kohlenmonoxidfreisetzenden Verbindungen.

Abstract translation: 含有N-取代的甲酰胺结构单元的聚合物，可通过含氢聚合物在氢气，一氧化碳和/或一氧化碳释放化合物存在下的催化反应获得。