公开(公告)号：DE59702047D1

公开(公告)日：2000-08-24

申请号：DE59702047

申请日：1997-10-21

Applicant: BASF AG

Inventor： ETZRODT DR ,  STROEZEL MANFRED ,  WELLER DR ,  JAEDICKE DR

IPC: C07C45/69 ,  C07C45/67 ,  C07C45/71 ,  C07C45/76 ,  C07C49/203

公开(公告)号：DE59900760D1

公开(公告)日：2002-03-14

申请号：DE59900760

申请日：1999-08-31

Applicant: BASF AG

Inventor： OOST DR ,  STROEZEL MANFRED ,  ETZRODT DR ,  WELLER DR ,  BOCKSTIEGEL DR ,  REIMER KLAUS ,  KAIBEL DR ,  JAEDICKE DR

IPC: B01J31/14 ,  B01D3/00 ,  B01D3/14 ,  B01D3/32 ,  B01J10/00 ,  B01J19/24 ,  C07B61/00 ,  C07C45/67 ,  C07C45/68 ,  C07C45/82 ,  C07C49/203 ,  C07C67/54 ,  C07C69/72

Abstract: Continuous production of 5-alken-2-one or 3,5-alkadien-2-one derivatives (I) by reacting a 1-alken-3-ol or 1-alkyn-3-ol derivative (II) with an alkyl acetoacetate (III) in a fractionation column to form an acetoacetate and alcohol involves (i) removing the alcohol and (ii) contacting the acetoacetate with catalyst in the lower part or bottom of the column to form (I). Continuous production of unsaturated ketones of formula (I) by reacting an unsaturated alcohol of formula (II) with an alkyl acetoacetate of formula (III) in the presence of an organoaluminum catalyst is carried out by: (a) reacting (II) with (III) on the plates of a fractionation column to form the acetoacetate of (II) and an alcohol of formula R OH; (b) removing the alcohol in the overhead stream from the column; (c) contacting the acetoacetate of (II) with the catalyst in the lower part or bottom of the column to form (I) and CO2; (d) removing the CO2 in the overhead stream from the column; and (e) withdrawing (I) in the bottoms stream from the column. R = 1-4C alkyl; R = 1-37C (un)saturated aliphatic hydrocarbyl (optionally substituted by methoxy groups), 4-12C cycloalkyl or 5-30C cycloalkylalkyl; and R = 1-5C alkyl.

公开(公告)号：DE59802040D1

公开(公告)日：2001-12-13

申请号：DE59802040

申请日：1998-08-26

Applicant: BASF AG

Inventor： TELES DR ,  RIEBER DR ,  BREUER DR ,  DEMUTH DR ,  HIBST PROF DR ,  KAESHAMMER DR ,  ETZRODT DR ,  KAISER DR

IPC: B01J23/06 ,  C07B61/00 ,  C07C41/08 ,  C07C41/28 ,  C07C45/51 ,  C07C49/203

Abstract: Unsaturated ketones, comprising optionally substituted but-3-enyl and/or buta-2.3-dienyl methyl ketones, are prepared by: (a) reacting allyl alcohols and/or propargyl alcohols with isopropenyl ethers, with formation of ketals as by-product; (b) preparing isopropenyl ethers by catalytic gas phase reaction of ketals with propyne and/or allene; and (c) feeding the ketal from stage (a) into stage (b). The but-3-enyl methyl ketones of formula (Ia) and but-2,3-dienyl methyl ketones of formula (Ib) formed, allyl alcohols of formula (IIa) and/or propargyl alcohols of formula (IIb) and isopropenyl ethers (III) used as starting materials are ketals (IV). R1, R2, R3, R4, R5 = H or (cyclo)alkyl, (cyclo)alkenyl or ar(alk)yl (optionally containing O); or R1R2 = 5-6-membered ring; and R6 = 1-4C alkyl. (III) are prepared by the gas phase reaction of (IV) and propyne or allene at elevated temperature in the presence of a heterogeneous catalyst containing Zn or Cd plus Si and O.

公开(公告)号：DE59905169D1

公开(公告)日：2003-05-28

申请号：DE59905169

申请日：1999-11-13

Applicant: BASF AG

Inventor： OOST DR ,  STROEZEL MANFRED ,  ETZRODT DR ,  WELLER DR ,  KAIBEL DR ,  JAEDICKE DR

IPC: B01J31/12 ,  B01J19/18 ,  C07B61/00 ,  C07C45/67 ,  C07C45/68 ,  C07C45/70 ,  C07C49/203

Abstract: Preparation of unsaturated methyl ketones(I), from an unsaturated alcohol(II) and alkyl acetoacetate(III) in the presence of an organo-aluminum catalyst(IV) comprises: (a) supplying (II) and (IV) to a reactor with a distillation column, (b) making temperature to be 170-250 degrees C under elevated pressure, (c) dosing the mixture with (III) and (d) maintaining a constant (III) content of 0.1-10 wt.% during the reaction. Preparation of unsaturated ketones of formula (I) involves reaction of an unsaturated alcohol of formula (II) with an alkyl acetoacetate of formula (III), in presence of 0.1-5 mol. % (based on (II)) of an organo-aluminum compound catalyst (IV), with elimination and distillative separation of the alcohol R3OH formed in the reaction, in a reactor system provided with a distillation column. Reaction is carried out by: (a) supplying (I (which boils at less than 140 degrees C), without a solvent, and (IV) to the reaction vessel, (b) adjusting the temperature to a value as constant as possible in the range 170-250 degrees C under elevated pressure, (c) dosing the mixture with (III) and (d) maintaining a (III) content as constant as possible in the range 0.1-10 wt. % during the reaction. Dotted line = optional bond; R1 = Me or Et; R2, R3 = 1-4C alkyl.

公开(公告)号：DE59903948D1

公开(公告)日：2003-02-13

申请号：DE59903948

申请日：1999-03-25

Applicant: BASF AG

Inventor： AQUILA DR ,  POX ROLAND ,  ETZRODT DR

IPC: B01J31/04 ,  C07B61/00 ,  C07D311/72 ,  C07C67/46 ,  C07C69/14 ,  C07C69/145 ,  C07C69/157

Abstract: Alcohols or phenols are converted into acetate esters by reaction with an equimolar amount of keten in presence of a zinc carboxylate. Preparation of acetate esters (I) from organic compounds (II) containing one or more hydroxy groups is effected using an equimolar amount of keten based on the number of OH groups in (II), in presence of a zinc carboxylate salt (or zinc compound which forms zinc acetate under the reaction conditions), with intensive stirring of the reaction mixture.