公开(公告)号：JPS62244434A

公开(公告)日：1987-10-24

申请号：JP8724087

申请日：1987-04-10

申请人： BASF AG

发明人： BRENNER KARL ,  RUPPEL WILHELM ,  WOERZ OTTO ,  HALBRITTER KLAUS ,  SCHEIPER HANS-JUERGEN ,  AQUILA WERNER ,  FUCHS HARTWIG

IPC分类号： B01J8/06 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/21 ,  C07C67/00

摘要： In the reactor for carrying out catalytic organic reactions in the gas phase, having reaction tubes (A) arranged between tube plates (B), the reaction tubes have an internal diameter in the range from 0.5 to 3 cm, the reaction tube length/internal diameter ratio is between 2 and 10, and a fluid heat transfer medium flows in the lateral direction around the reaction tubes (A). The tube bundle reactor is particularly suitable for exothermic organic reactions. … …

公开(公告)号：JPH10338656A

公开(公告)日：1998-12-22

申请号：JP14286798

申请日：1998-05-25

申请人： BASF AG

发明人： AQUILA WERNER DR ,  FUCHS HARTWIG ,  WOERZ OTTO DR ,  RUPPEL WILHELM DR ,  HALBRITTER KLAUS DR

IPC分类号： B01J23/52 ,  B01J8/02 ,  B01J8/08 ,  C07B61/00 ,  C07C45/38 ,  C07C45/67 ,  C07C47/21 ,  C07C47/22

摘要： PROBLEM TO BE SOLVED: To profitably obtain the subject aldehyde in a good yield by subjecting an unsaturated aliphatic alcohol and an oxygen-containing gas to an oxidative dehydrogenation reaction in a bundle reactor. SOLUTION: This method for continuously and industrially producing an aldehyde of formula II comprises passing an oxygen-containing alcohol vapor comprising the vapor of a 3-alkyl-buten-1-ol of formula I (R is H; R is isoprenal, or R and R together forms a prenal group) and an oxygen-containing gas through a silver-carried catalyst layer having a thickness of at least 0.5 cm at a temperature which is higher than the dew point of the alcohol but lower than a reaction-starting temperature, bringing the passed vapor into contact with a silver-carried catalyst in parallel plural reaction pipes each having an inner diameter of about 0.5-3 cm and a length of at least 5 cm and heated with a liquid thermal medium flowing around the reaction pipes at 300-600 deg.C to subject the vapor to an oxidative dehydrogenation reaction, immediately cooling the reaction gas and subsequently separating the aldehyde of formula II from the obtained condensed product.

公开(公告)号：JP2000119211A

公开(公告)日：2000-04-25

申请号：JP28441399

申请日：1999-10-05

申请人： BASF AG

发明人： THERRE JOERG DR ,  KAIBEL GERD DR ,  AQUILA WERNER DR ,  WEGNER GUENTER ,  FUCHS HARTWIG

IPC分类号： B01J27/16 ,  C07B61/00 ,  C07C41/28 ,  C07C43/15 ,  C07C45/37 ,  C07C45/51 ,  C07C45/54 ,  C07C45/67 ,  C07C47/21 ,  C07C49/203

摘要： PROBLEM TO BE SOLVED: To provide a method for producing citral in a high yield by continuously distilling out formed intermediate compounds, such as prenol, as well as the citral from a reaction mixture during reactions, and heating the intermediate compounds at a specified temperature, when a specific acetal is thermally decomposed to form the prenol and the dienyl ether, and then the formed ether is subjected to Claisen rearrangement and subsequently to Cope rearrangement. SOLUTION: This method for producing citral of formula V comprises thermally decomposing (A) 3-methyl-2-buten-1-al-diprenyl acetal of formula I, if necessary, in the presence of an acidic catalyst, to form (B) prenol of formula II and (C) a compound of formula III, subjecting the formed compound of formed III to Claisen rearrangement to obtain (D) formylhexadiene of formula IV, and subsequently subjecting the obtained compound to Cope rearrangement. Therein, the characteristics comprise continuously distilling out the formed intermediate compounds of the component B, the component C and the component D as well as the objective citral from the reaction mixture during the above reactions, and heating the prenol and, if necessary, the intermediate compounds of the component C and D at 100-200 deg.C.

公开(公告)号：JP2000086565A

公开(公告)日：2000-03-28

申请号：JP23613599

申请日：1999-08-23

申请人： BASF AG

发明人： AQUILA WERNER DR ,  BOTZEM JOERG DR ,  BRUNNER MELANIE DR ,  FUCHS HARTWIG ,  KRAUSE WOLFGANG DR ,  PANDL KLAUS ,  SCHAEFER-LUEDERSSEN ULRICH DR

IPC分类号： B01J23/50 ,  C07B61/00 ,  C07C45/37 ,  C07C45/39 ,  C07C45/51 ,  C07C49/175 ,  C07C49/403

摘要： PROBLEM TO BE SOLVED: To produce a carbonyl compound in a high yield and high space time yield even on an industrial scale by oxidizing an alcohol with oxygen in the presence of a silver-coated catalyst, or silver crystal or copper one each having a specific particle diameter under conditions of specific residence time and a specific temperature. SOLUTION: When performing vapor phase oxidation of an alcohol of formula I [R1 and R2 are each an aliphatic group, an alicyclic one, an aromatic- aliphatic one, an alicyclic-aliphatic one respectively having 1-10 carbon atoms or a 3-10C (lower alkyl-substituted) alkylene; X is O or two of an alkoxy group of the formula OR3 (R3 is a 1-6C aliphatic group or the like)] [pref. a ketol (X=0) such as 3-hydroxy-2-butanone (i.e., acetoin) or the like] with oxygen (A) at 270-600 deg.C in the presence of a silver-coated catalyst comprising silver- metal wear resistant coating on the core of an inert support material, or (B) at 450-750 deg.C for

公开(公告)号：JP2002114728A

公开(公告)日：2002-04-16

申请号：JP2001272755

申请日：2001-09-07

申请人： BASF AG

发明人： THERRE JORG ,  KAIBEL GERD ,  AQUILA WERNER DR ,  WEGNER GUNTER ,  FUCHS HARTWIG

IPC分类号： C07C41/50 ,  C07B61/00 ,  C07C41/56 ,  C07C41/58 ,  C07C43/303

摘要： PROBLEM TO BE SOLVED: To overcome disadvantages of the prior art and to provide a process for preparing an unsaturated acetal which is easy to regulate and can be operated in a stable manner. SOLUTION: This continuous process for preparing the unsaturated acetal of formula I (wherein, R1 to R7 are each independently hydrogen or a straight- chain or a branched, optionally substituted 1-6C alkyl group; R8 is hydrogen or a saturated or a mono- or a polyunsaturated straight-chain or branched, optionally substituted 1-12C alkyl group or a 3- to a 12-membered saturated or a mono- or a polyunsaturated carbocyclic ring) by reacting 1 mol of an aldehyde of formula II (wherein, R1 to R3 are as defined in the following formula I) with at least 1 mol of an alcohol of formula III (wherein, R5 to R8 are as defined by the following formula I) in the presence of a catalytic amount of an acid while removing water formed during the reaction, which comprises only partially reacting the reactants in a reactional column, concentrating the resultant acetal in at least two successive evaporation stages and returning the recovered reactants to the reactional column.

公开(公告)号：JPH11349517A

公开(公告)日：1999-12-21

申请号：JP9491399

申请日：1999-04-01

申请人： BASF AG

发明人： BROECKER FRANZ JOSEF DR ,  KAIBEL GERD DR ,  AQUILA WERNER ,  FUCHS HARTWIG ,  WEGNER GUENTER DR ,  STROEZEL MANFRED

IPC分类号： B01J23/44 ,  B01J8/20 ,  B01J8/22 ,  B01J19/24 ,  B01J23/46 ,  C07B61/00 ,  C07C45/62 ,  C07C47/21 ,  C07C49/04

摘要： PROBLEM TO BE SOLVED: To carry out the hydrogenation of especially citral to citronellal at a low cost by an economical process having improved space-time yield and reduced investment cost by hydrogenating an α,β-unsaturated carbonyl compound in liquid phase under specific condition. SOLUTION: A compound of formula II is produced by the hydrogenation of an α,β-unsaturated carbonyl compound of formula I (R1 is H or an organic group; R2 to R4 are each H or a 1-4C alkyl) with hydrogen in the presence of powdery palladium and/or rhodium and an organic group while performing the regeneration of the product and the circulation of hydrogen gas in a bubble packed column reactor. The packing material in the bubble column reactor preferably has a hydraulic diameter of 0.5-20 mm and a surface roughness of 0.1 to 10 times the average particle diameter of the powdery catalyst particles at the opening or the channel wall part of the packing material and is made of a metallic material, a plastic material, etc.