公开(公告)号：JP2000086565A

公开(公告)日：2000-03-28

申请号：JP23613599

申请日：1999-08-23

Applicant: BASF AG

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

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

Abstract: 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：AT225350T

公开(公告)日：2002-10-15

申请号：AT00101922

申请日：2000-02-01

Applicant: BASF AG

Inventor： BOTZEM JOERG DR ,  JAEDICKE HAGEN DR ,  JOHN MICHAEL DR ,  PAUST JOACHIM DR

IPC: C07C49/175 ,  C07C237/36 ,  C07C251/08 ,  C07D475/04

公开(公告)号：DE19724884A1

公开(公告)日：1998-12-17

申请号：DE19724884

申请日：1997-06-12

Applicant: BASF AG

Inventor： STAMM ARMIN DR ,  JULIUS MANFRED DR ,  KINDLER ALOIS DR ,  HENNINGSEN MICHAEL DR ,  BOTZEM JOERG DR

IPC: C07D233/56 ,  C07D233/60 ,  C07D233/80

Abstract: The invention relates to carbonyldiimidazoles having the general formulae (Ia), (Ib), (Ic), or their mixtures. In these formulae, R stands for a C1-4-alkyl radical and R is hydrogen or a methyl radical. The invention also relates to tert-butyl esters derived from these carbonyldiimidazoles.

公开(公告)号：MY126173A

公开(公告)日：2006-09-29

申请号：MYPI20023637

申请日：2002-09-28

Applicant: BASF AG

Inventor： HEYDRICH GUNNAR DR ,  AUST NICOLA CHRISTIANE DR ,  PUETTER HERMANN P DR ,  FISCHER ANDREAS DR ,  BOTZEM JOERG DR

IPC: C07C43/30 ,  C07B61/00 ,  C07C41/50 ,  C07C43/303 ,  C07C47/198

Abstract: A PROCESS IS DESCRIBED FOR PREPARING DIACETALS OF GLYOXAL BY REACTING FROM 40 TO 75BY 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 8BY WEIGHT IN CONTACT WITH THE ACID CATALYST UNTIL CONCENTRATION IN THE REACTION MIXTURE OF THE DIACETAL FORMED REACHES AT LEAST 70OF THE EQUILIBRIUM CONCENTRATION WITHOUT MORE THAN 5BY WEIGHT OF THE ALCOHOL USED HAVING ALREADY BEEN DISTILLED OFF.