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    Production of polyene aldehydes
    25.
    发明专利
    Production of polyene aldehydes 未知

    公开(公告)号：GB1137429A

    公开(公告)日：1968-12-18

    申请号：GB4370566

    申请日：1966-09-30

    Applicant: BASF AG

    Inventor： FREYSCHLAG HERWIG ,  REIF WERNER ,  NUERRENBACH AXEL ,  POMMER HORST

    IPC: A23L5/47 ,  C07C47/20 ,  C07C47/38 ,  C07C403/00

    Abstract: 1,137,429. Polyene aldehydes. BADISCHE ANILIN- & SODA-FABRIK A.G. 30 Sept., 1966 [2 Oct., 1965], No. 43705/66. Heading C2C. [Also in Division A2] Aldehydes of formula in which the radicals R 1 , from left to right, denote H and CH 3 alternately, the radicals R 2 starting from the -C#C- bond, denote CH 3 and H alternately, m and n are each 0-3 and their sum is at least 1, and the bond indicated by the broken line may be hydrogenated, are prepared by reacting a phosphonium compound of formula in presence of a proton acceptor which will convert it to the ylid and in an organic medium with at least an equimolar amount of a dialdehyde O = HC-(CR 2 = CH)m-C#C-(CH = CR 2 )m-CH = O, X being the 2,2,6-trimethylcyclohex-1-enyl radical.

    Production of axerophthyl phosphonium salts
    28.
    发明专利
    Production of axerophthyl phosphonium salts 未知

    公开(公告)号：GB969180A

    公开(公告)日：1964-09-09

    申请号：GB1965863

    申请日：1963-05-17

    Applicant: BASF AG

    Inventor： SARNECKI WILHELM ,  NUERRENBACH AXEL ,  REIF WERNER

    IPC: C07F9/54

    Abstract: Quaternary axerophthyl phosphonium salts are prepared by reacting an ester of vitamin A alcohol (axerophthol) with a tertiary phosphine and an acid or with acid addition salts of tertiary phosphines A solvent may be used. Preferred temperatures are from 0-80 DEG C., but -20 to +120 DEG C. may be used. The initial material may be a waste liquor containing a vitamin A ester obtained in the production and purification of vitamin A esters. Specified phosphines are triphenyl, tri-p-tolyl and trianisyl phosphines. Suitable acids include sulphuric acid, organic sulphonic acids and fluorboric acid. Specified vitamin A esters are the acetate, propionate and palmitate. The vitamin A esters may be in the cis- or trans-form. Specification 812,522 is referred to.

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