公开(公告)号：DE3470032D1

公开(公告)日：1988-04-28

申请号：DE3470032

申请日：1984-01-11

Applicant: BASF AG

Inventor： SCHAEFER-LUEDERSSEN ULRICH DR ,  JAEDICKE HAGEN DR ,  PAUST JOACHIM DR ,  EGGERSDORFER MANFRED DR

IPC: C07C43/315 ,  C07C45/27 ,  C07C45/28 ,  C07C45/34 ,  C07C45/51 ,  C07C45/59 ,  C07C45/60 ,  C07C45/67 ,  C07C45/79 ,  C07C47/267 ,  C07C47/42 ,  C07C47/46 ,  C07C49/753 ,  C07C49/757 ,  C07C51/285 ,  C07D317/72 ,  C07D319/08 ,  C07F11/00

Abstract: 3-Hydroxy- alpha -cyclocitral derivatives of the general formula I (I) where R1 is wherein R2 and R3 can be identical or different and are each straight-chain or branched alkyl of 1 to 6 carbon atoms, or R2 and R3 together form an ethylene or propylene group which can be substituted by methyl or ethyl, processes for their preparation and their use for the preparation of safranal and 3-hydroxy- beta -cyclocitral, as well as optically active - cyclocitral derivatives of the general formulae A and B where R1 is if X is hydrogen and Y is OH, but is otherwise where R2 and R3 have the above meanings, and X and Y together are oxygen, or X is hydrogen if Y is OH, and a process for the preparation of optically active 3-oxo- alpha -cyclocitral acetals, wherein a mixture of the corresponding racemic 3-oxo- alpha -cyclocitral acetals is separated into the optically active compounds by chromatography over a suitable chiral adsorbent. The novel compounds open up a novel advantageous route to optically active 3-hydroxy- beta -cyclocitrals, which are desirable because they are important intermediates for carotinoids identical to the natural products.

公开(公告)号：DE3619169A1

公开(公告)日：1987-12-10

申请号：DE3619169

申请日：1986-06-06

Applicant: BASF AG

Inventor： EGGERSDORFER MANFRED DR ,  SIEGEL HARDO DR ,  SCHUMACHER ALFRED DR ,  GROSCH WALTER DR

IPC: C07C45/46 ,  C07C49/76 ,  C07C51/373 ,  C07C65/34

Abstract: Aromatics are acylated in the presence of a Friedel-Crafts catalyst and of an aluminium alkyl or alkylaluminium halide.

公开(公告)号：DE3360188D1

公开(公告)日：1985-06-20

申请号：DE3360188

申请日：1983-07-27

Applicant: BASF AG

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

IPC: C01C3/14 ,  C07C263/12 ,  C07C265/04 ,  C07C118/00

公开(公告)号：DE3229323A1

公开(公告)日：1984-02-09

申请号：DE3229323

申请日：1982-08-06

Applicant: BASF AG

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

IPC: C01C3/14 ,  C07C263/12 ,  C07C265/04 ,  C07C119/042 ,  C07C118/04