公开(公告)号：JPH10338656A

公开(公告)日：1998-12-22

申请号：JP14286798

申请日：1998-05-25

Applicant: BASF AG

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

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

Abstract: 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：DE19756913A1

公开(公告)日：1999-06-24

申请号：DE19756913

申请日：1997-12-19

Applicant: BASF AG

Inventor： BRUNNER MELANIE DR ,  BOETTCHER ARND DR ,  BREITSCHEIDEL BORIS DR ,  HALBRITTER KLAUS DR ,  HENKELMANN JOCHEM DR ,  THIL LUCIEN DR ,  PINKOS ROLF DR

IPC: C07C51/36 ,  C07C67/303 ,  C07C69/75 ,  C08K5/12 ,  B01J23/46 ,  C08K5/10

Abstract: The hydrogenation of esters of benzene-dicarboxylic acids is carried out on supported catalysts containing a Sub-Group VIIII metal on a macroporous support. A process for the hydrogenation of benzene-dicarboxylic acid ester(s) with hydrogen in presence of a supported catalyst containing Sub-Group VIII metal(s) on a macroporous support. If the ester is dimethyl terephthalate, this excludes hydrogenation on a catalyst containing ruthenium, with or without Sub-Group I, VII or VIII metal(s), on a support with an average pore diameter (APD) of at least 50 nm and a BET surface of not more than 30 m /g, with an active metal content of 0.01-30 wt.% and a ratio of (active metal surface):(support surface) of less than 0.05, and/or on a catalyst containing 0.01-30 wt.% active metal(s) as above on a support in which 10-50 vol.% of the pores consist of macropores with a diameter of 50-10,000 nm and 50-90 vol.% consist of mesopores with a diameter of 2-50 nm.

公开(公告)号：DE3277504D1

公开(公告)日：1987-11-26

申请号：DE3277504

申请日：1982-11-11

Applicant: BASF AG

Inventor： ECKHARDT HEINZ DR ,  HALBRITTER KLAUS DR ,  ROHR WOLFGANG DR

IPC: C07C41/54 ,  B01J27/00 ,  C07B61/00 ,  C07C41/00 ,  C07C41/50 ,  C07C43/303 ,  C07C67/00 ,  C07D317/12 ,  C07D317/22

Abstract: Novel malondialdehyde tetraalkylacetals and the preparation of malondialdehyde tetraalkylacetals by reacting alkyl formates, oxiranes and alkyl vinyl ethers in the presence of a halide of boron, antimony(V), iron(III), tin(II or IV) and/or zinc. The malondialdehyde tetraalkylacetals obtainable by the process of the invention are valuable starting materials for the preparation of dyes, pest control agents and pharmaceuticals.

公开(公告)号：DE3603662A1

公开(公告)日：1987-08-13

申请号：DE3603662

申请日：1986-02-06

Applicant: BASF AG

Inventor： HIMMELE WALTER DR ,  BRENNER KARL ,  EGGERSDORFER MANFRED DR ,  HALBRITTER KLAUS DR

IPC: B01J23/00 ,  C07B61/00 ,  C07D317/26 ,  C07D319/06 ,  C07D321/06 ,  C07D319/08 ,  C07D321/10 ,  C07D321/12

公开(公告)号：DE3438568A1

公开(公告)日：1986-04-30

申请号：DE3438568

申请日：1984-10-20

Applicant: BASF AG

Inventor： STEINIGER MICHAEL DR ,  HALBRITTER KLAUS DR ,  DEGNER DIETER DR

IPC: C07D311/76 ,  C25B3/23 ,  C25B3/02 ,  C07D311/20

Abstract: 1. A process for the preparation of a 1-alkoxyisochroman of the general formula see diagramm : EP0179377,P5,F3 where R is alkyl of 1 to 4 carbon atoms, and the radicals R**1 and R**2 are identical or different and each is hydrogen, or linear or branched alkyl of 1 to 9 carbon atoms, wherein an isochroman of the general formula see diagramm : EP0179377,P5,F4 where R**1 and R**2 have the above meanings, is oxidized electrochemically in the presence of an alkanol of the formula ROH, where R has the above meaning.

公开(公告)号：DE3261982D1

公开(公告)日：1985-03-07

申请号：DE3261982

申请日：1982-02-01

Applicant: BASF AG

Inventor： REBAFKA WALTER DR ,  HEILEN GERD DR ,  HALBRITTER KLAUS DR ,  FRANZISCHKA WOLFGANG DR

IPC: C07D211/12 ,  B01J23/00 ,  B01J27/00 ,  C07D207/32 ,  C07D207/323 ,  C07D213/08 ,  C07D213/09 ,  C07D213/133

Abstract: A pyridine or a pyrrole is obtained in a one-stage process directly from an alpha , omega -dinitrile of appropriate carbon skeleton when the dinitrile is reacted in the gas phase with hydrogen, over a hydrogenation catalyst.

公开(公告)号：DE3061112D1

公开(公告)日：1982-12-23

申请号：DE3061112

申请日：1980-10-03

Applicant: BASF AG

Inventor： HEILEN GERD DR ,  HALBRITTER KLAUS DR ,  GRAMLICH WALTER DR

IPC: B01J23/44 ,  B01J27/16 ,  B01J27/18 ,  C07C45/75 ,  C07C49/04 ,  C07C49/403 ,  C07C49/76

Abstract: A process for the preparation of alpha -methylsubstituted ketones by reacting the corresponding non-methylsubstituted ketones with formaldehyde under hydrogenating conditions. The reaction proceeds easily and with good yields if a catalyst containing metallic palladium deposited on a zirconium, hafnium, titanium or tin phosphate is used. The products are valuable intermediates for the preparation of dyes, crop protection agents or drugs.

公开(公告)号：DE59201759D1

公开(公告)日：1995-05-04

申请号：DE59201759

申请日：1992-06-13

Applicant: BASF AG

Inventor： SCHUSTER LUDWIG DR ,  HALBRITTER KLAUS DR

IPC: B01J23/44 ,  B01J25/02 ,  B01J23/42 ,  C07B61/00 ,  C07C67/44 ,  C07C67/46 ,  C07C69/38

Abstract: The invention relates to a process for preparing dialkyl malonates by ozonolysis of diketene, subsequent catalytic hydrogenation and esterification of the reaction products, the by-products being alkyl formates and dialkyl acetals.

公开(公告)号：DE4120721A1

公开(公告)日：1992-12-24

申请号：DE4120721

申请日：1991-06-22

Applicant: BASF AG

Inventor： SCHUSTER LUDWIG DR ,  HALBRITTER KLAUS DR

IPC: B01J23/44 ,  B01J23/42 ,  B01J25/02 ,  C07B61/00 ,  C07C67/44 ,  C07C67/46 ,  C07C69/38

Abstract: The invention relates to a process for preparing dialkyl malonates by ozonolysis of diketene, subsequent catalytic hydrogenation and esterification of the reaction products, the by-products being alkyl formates and dialkyl acetals.

公开(公告)号：DE3680932D1

公开(公告)日：1991-09-26

申请号：DE3680932

申请日：1986-02-20

Applicant: BASF AG

Inventor： ECKHARDT HEINZ DR ,  HALBRITTER KLAUS DR ,  HOELDERICH WOLFGANG DR ,  MROSS WOLF DIETER DR

IPC: C07B61/00 ,  B01J29/00 ,  C07C67/02 ,  C07C67/03 ,  C07C67/10 ,  C07C69/06 ,  C07C69/14 ,  C07C69/54 ,  C07C69/78

Abstract: Use of acidic zeolite catalysts of the pentasil type (1) for ester exchange reaction between esters of carboxylic acids (2) and acids (3), alcohols (4) or other carboxylic acids, as shown in Reactions 1, 2 and 3, is new. 1. R1-COOR2 + R3.COOH reversibly gives R3COOR2+R1COOH Acidolysis 2. R1-COOR2 + R3-OH reversibly gives R1-COOR3+R2OH Alcoholysis 3. R1-COOR2 + R3COOR4 reversibly gives R1COOR4+R3COOR2 Trans-esterification. R1, R2, R3, R4 usually = H or aliphatic or aromatic 1-30C.