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：DE50005403D1

公开(公告)日：2004-04-01

申请号：DE50005403

申请日：2000-11-14

Applicant: BASF AG

Inventor： NOUWEN DR ,  KAESHAMMER DR ,  HOEHN DR ,  FUNKE DR ,  MELDER DR ,  GUTSCHOVEN FRANK ,  BUSKENS DR

IPC: B01J35/02 ,  B01J23/755 ,  C07B61/00 ,  C07C209/26 ,  C07C211/06