公开(公告)号：JP2001151729A

公开(公告)日：2001-06-05

申请号：JP2000316433

申请日：2000-10-17

Applicant: BASF AG

Inventor： SCHEIN KARIN ,  BALDENIUS KAI-UWE DR ,  SIEGEL WOLFGANG DR ,  STUERMER RAINER DR ,  RUFF DETLEF ,  HAGEN IEEDIKKE

IPC: C07B61/00 ,  C07C45/46 ,  C07C49/825 ,  C07C67/42 ,  C07C69/017 ,  C07C69/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing the subject compound, and the subject compound. SOLUTION: This method for producing a monoacetylated hydroquinone compound of the general formula I comprises reaction between the corresponding diacetylphenolic compound of the general formula II and a peroxo compound optionally in the presence of an acid. In the general formulas I and II, R1, R2 and R3 are each H or methyl.

公开(公告)号：DE19810671A1

公开(公告)日：1999-09-16

申请号：DE19810671

申请日：1998-03-12

Applicant: BASF AG

Inventor： RUFF DETLEF ,  BURST WOLFRAM ,  KAISER WULF ,  STROEZEL MANFRED

IPC: C07C45/72 ,  C07C45/74 ,  C07C49/603 ,  C07C49/543 ,  C07C45/68 ,  C07C45/45

Abstract: 2,5,6-trimethyl-cyclohex-2-en-1-one (I) is prepared by continuously pumping diethylketone (II), crotonaldehyde (III) and an aqueous strong base through a pressure vessel in such a fashion that the reaction temperature is 150-350 degrees C and the average residence time in the pressure vessel is only 0.1 seconds to 20 minutes. Preparation of 2,5,6-trimethyl-cyclohex-2-en-1-one (I) comprises reaction of (i) diethylketone (II) with (ii) crotonaldehyde (III) (or a compound which is converted to (III) under the selected reaction conditions), in the presence of basic agents, at elevated temperatures. Component (ii) (1 mol), component (i) (5-30 mol) and an aqueous solution or suspension of a strong base are pumped continuously, via separate supply points or in the form of a mixture, into an optionally heated pressure vessel which can guarantee intensive mixing. The components are pumped to the vessel in such a fashion that the reaction temperature is 150-350 degrees C and the average residence time in the pressure vessel is only 0.1 seconds to 20 minutes.

公开(公告)号：DE19950616A1

公开(公告)日：2001-04-26

申请号：DE19950616

申请日：1999-10-20

Applicant: BASF AG

Inventor： SCHEIN KARIN ,  BALDENIUS KAI-UWE ,  SIEGEL WOLFGANG ,  STUERMER RAINER ,  RUFF DETLEF ,  JAEDICKE HAGEN

IPC: C07B61/00 ,  C07C45/46 ,  C07C49/825 ,  C07C67/42 ,  C07C69/017 ,  C07C69/16 ,  C07C69/28 ,  C07C45/45 ,  C07C49/83

Abstract: Preparation of monoacetylated hydroquinone compound comprises reacting a dicetylphenol compound with peroxo compounds optionally using an acid in one reaction step. Preparation of monoacetylated hydroquinone compound of formula (I) comprises reacting a dicetylphenol compound of formula (II) with peroxo compounds optionally using an acid. R1-R3 = H or Me. Independent claims are included for: (1) preparation of (II) by reacting phenol compounds of formula (III) with an acetylation agent using an acid catalyst; (2) preparation of monoacetylated hydroquinone compounds (I) by reacting (III) with an acetylation agent using an acid catalyst to give (II) and further reacting with peroxo compounds, optionally in the presence of an acid; and (3) compounds of formula (Ia)-(Ie).

公开(公告)号：DE19843672A1

公开(公告)日：2000-03-30

申请号：DE19843672

申请日：1998-09-23

Applicant: BASF AG

Inventor： BALDENIUS KAI-UWE ,  BOCKSTIEGEL BERNHARD ,  JAEDICKE HAGEN ,  RUFF DETLEF ,  SIEDENBIEDEL CARSTEN ,  STUERMER RAINER

IPC: C07D311/70 ,  C07D311/72

公开(公告)号：DE19843875A1

公开(公告)日：2000-03-30

申请号：DE19843875

申请日：1998-09-25

Applicant: BASF AG

Inventor： JAEDICKE HAGEN ,  KLATT MARTIN JOCHEN ,  RUFF DETLEF

IPC: C07C45/34 ,  C07C46/08 ,  C07C251/24 ,  C07F15/00 ,  C07F1/08 ,  C07F3/02 ,  C07F7/00 ,  C07F13/00

Abstract: In the preparation of metal salens (I) by reaction of optionally mono- or poly-substituted salicylaldehyde with a diamine or an amine in a solvent at elevated temperature followed by reaction of the obtained salen with a metal compound, a metal oxide is used as the metal compound.