公开(公告)号：DE2926562A1

公开(公告)日：1981-01-22

申请号：DE2926562

申请日：1979-06-30

Applicant: BASF AG

Inventor： NISSEN AXEL DIPL CHEM DR ,  REBAFKA WALTER DIPL CHEM DR ,  AQUILA WERNER DIPL CHEM DR

IPC: C07C45/00 ,  C07C45/51 ,  C07C47/21 ,  C07C67/00 ,  C07C49/20

公开(公告)号：DE3138423A1

公开(公告)日：1983-04-14

申请号：DE3138423

申请日：1981-09-26

Applicant: BASF AG

Inventor： AQUILA WERNER DIPL CHEM DR ,  NISSEN AXEL DIPL CHEM DR ,  KAIBEL GERD DIPL ING ,  HORNER MICHAEL DIPL CHEM DR ,  REBAFKA WALTER DIPL CHEM DR

IPC: A61K8/33 ,  A61Q13/00 ,  B01D3/34 ,  B01D3/38 ,  C07B31/00 ,  C07B63/00 ,  C07C27/00 ,  C07C29/141 ,  C07C29/80 ,  C07C31/04 ,  C07C33/025 ,  C07C45/00 ,  C07C45/82 ,  C07C47/21 ,  C07C67/00 ,  C11B9/00 ,  C11B9/02 ,  A61K7/46

Abstract: Distillative separation of liquid mixtures of one or more water-insoluble substances which have boiling points higher than that of water and one or more substances which have boiling points lower than that of water or which form azeotropes having boiling points lower than that of water, wherein the mixture to be distilled is mixed with a quantity of water such that the boiling point of the water under the pressure applied limits the bottom temperature of the mixture of substances to be separated.

公开(公告)号：DE3049543A1

公开(公告)日：1982-07-29

申请号：DE3049543

申请日：1980-12-31

Applicant: BASF AG

Inventor： SAUER WOLFGANG DIPL CHEM DR ,  AQUILA WERNER DIPL CHEM DR ,  HOFFMANN WOLFGANG DIPL ING DR ,  BRENNER KARL ,  HALBRITTER KLAUS DIPL CHEM DR

IPC: C07C47/21 ,  B01J23/00 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/81 ,  C07C67/00 ,  C07C45/32 ,  C07C45/78

Abstract: A process for the continuous preparation of 3-alkyl-buten-1-als by oxidative dehydrogenation of 3-alkyl-buten-1-ols at from 320 DEG to 650 DEG C. with oxygen over a catalyst containing copper and/or silver, wherein, within one second after contact with the catalyst, the vaporous reaction mixture, which is at from 320 DEG to 650 DEG C., is brought into contact with a liquid comprising water and/or the condensed reaction mixture at from -20 DEG to 50 DEG C., and the 3-alkyl-buten-1-als are separated off from the resulting condensate.

公开(公告)号：DE2641268A1

公开(公告)日：1978-03-16

申请号：DE2641268

申请日：1976-09-14

Applicant: BASF AG

Inventor： AQUILA WERNER DIPL CHEM DR

IPC: C07C45/66 ,  C07C49/20

Abstract: Prepn. of 2-Me-1- and 2-Me-2-hepten-6-one (Ia and Ib) comprises heating 2-Me-heptan-2-ol-6-one, (II), or residues contg. (II), to 80-300 degrees C in the presence of strongly acid catalysts. The escape of 2,2,6-trimethyl-2,3-dihydro-4H-pyran, (III), formed as intermediate, from reaction mixt. is prevented, by working in a closed system under press. of reactants or pref. by using a reaction vessel fitted with a reflux condenser and a phase sepn. vessel. Vapour mixt. of (III) and H2O is condensed; H2O is removed and (III)-rich upper phase is recycled to reactor. (I) are intermediates for synthesis of carotinoids and perfumes, e.g. isophytol and ionone.

公开(公告)号：DE2611664A1

公开(公告)日：1977-09-29

申请号：DE2611664

申请日：1976-03-19

Applicant: BASF AG

Inventor： HIMMELE WALTER DIPL CHEM DR ,  AQUILA WERNER DIPL CHEM DR ,  WOERZ OTTO DIPL CHEM DR

IPC: C07C69/02

Abstract: Prodn. of allyl esters (I) of the formula CH2=CH-CHR'-O-CO-R" (in which R' is 1-4C alkyl, opt. with an acyloxy substit. with max. 4C. alkyl or H) involves isomerisation of allyl esters (II) of the formula R'-CH=CH-CH2-O-CO-R" at elevated temp., as in DT 2406058, in the presence of Cu and/or Cu (I) or Cu (II) cpds. and in the presence of carboxylic acids (III). The improvement comprises the use of carbocylic anhydride (IV) in addn. to (III). (IV) pref. is the anhydride of (III), esp. acetic anhydride (IVa), and is used in an amt. of 0.1-10 mole-% wrt (III). In an example but-2-en-1,4-diyl acetate was isomerise to but-2-en-3,4-diyl acetate in the presence of (IVa) the yield being 10% and amt. of by-prods. 1%. If (IVa) was omitted, the yield was up to 2.5% and amt of by-prods. 1.5%. (I) are used as starting materials in organic syntheses.