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    2.
    发明专利
    未知

    公开(公告)号：DE1643709B1

    公开(公告)日：1971-07-08

    申请号：DE1643709

    申请日：1967-12-08

    Applicant: BASF AG

    Inventor： DR POMMER HORST PROF ,  MUELLER HERBERT DR ,  MANGOLD DIETRICH DR ,  OVERWIEN HERMANN DR

    IPC: C07C29/56

    Abstract: 1,239,434. Preparation of 3-methylbut-2-en-1- ol and its acetate. BADISCHE ANILIN- & SODA-FABRIK A.G. 6 Dec., 1968 [8 Dec., 1967; 22 March, 1968], No. 68023/68. Heading C2C. 3 - Methylbut - 2 - en - 1 - ol or 3 - methylbut-2-en-1-yl acetate are prepared by treating 3-methylbut-3-en-1-ol or 3-methylbut-3-en-1-ylacetate, respectively, with a catalytic amount of a carbonyl compound of a transition metal of Groups VI to VIII of the Mendeleef Periodic System. The preferred catalyst is iron pentacarbonyl and the presence of a catalytic amount of a base, e.g. hexamethylene tetramine, is also advantageous.

    3.
    发明专利
    未知

    公开(公告)号：DE1643668B1

    公开(公告)日：1971-06-09

    申请号：DE1643668

    申请日：1967-10-04

    Applicant: BASF AG

    Inventor： DR POMMER HORST PROF ,  MUELLER HERBERT DR ,  KOEHL HARALD DR ,  OVERWIEN HERMANN DR

    IPC: C07C45/67

    Abstract: 1,233,794. 2-Methylhept-2-en-6-one. BADISCHE ANILIN- & SODA-FABRIK A.G. 3 Oct., 1968 [4 Oct., 1967], No. 46907/68. Heading C2C. 2 - Methylhept - 2 - en - 6 - one is prepared by isomerization of 2-methylhept-l-en-6-one by means of an isomerization catalyst wherein the isomerization catalyst is a carbonyl compound of an element of Groups VI B , VII B or VIII of the Periodic Table in the zero oxidation state or wherein one or more of the carbonyl groups are replaced by other electrically neutral ligands such as ligands having tertiary basic nitrogen atoms or phosphorus atoms. The amount of carbonyl compound is from 0À1- 20% b.w. with reference to the amount of 2- methylhept-1-en-6-one. The reaction may be carried out at a temperature of 100-250‹ C. and from 1-50 atmospheres pressure in the presence of a solvent. Specified isomerization catalysts include iron pentacarbonyl, bis-triphenyl phosphine iron tricarbonyl and tripyridinodiiron tetracarbonyl.

    4.
    发明专利
    未知

    公开(公告)号：DE1643681A1

    公开(公告)日：1971-03-25

    申请号：DE1643681

    申请日：1967-10-21

    Applicant: BASF AG

    Inventor： DR POMMER HORST PROF ,  MUELLER HERBERT DR ,  MANGOLD DIETRICH DR ,  PALM CHRISTOF DR

    IPC: C07C47/20 ,  C07C47/26

    Abstract: 1,233,959. 4 - Hydroxytiglaldehyde derivatives. BADISCHE ANILIN- & SODAFABRIK A.G. 18 Oct., 1968 [21 Oct., 1967], No. 49541/68. Heading C2C. Ethers or esters of 4 - hydroxytiglaldehyde (2 - methyl - but - 2 - en - 1 - al - 4 - ol) are prepared by oxidizing an ether or ester of 3 - methylbut - 2 - en - 1 - ol with oxygen or a gas containing oxygen in the presence of a heavy metal/ bromine catalyst in the liquid phase at 20-200‹ C. The catalyst comprises a heavy metal source which may be a salt containing the metal in the cation or anion, a complex salt or an oxide of e.g. V, Cr, Mo, W, Mn, Fe, Co, Sn or Ce, and a bromine source which is bromine or a compound which contains or readily yields bromide, e.g. HBr an alkali metal, alkaline earth metal or ammonium bromide, bromoform, allyl bromide or benzyl bromide. A solvent may be used. Examples prepare 4- acetoxytiglaldehyde from 3-methyl-1-acetoxybut-2-ene.

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