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    151.
    发明专利
    未知

    公开(公告)号：DE3729144A1

    公开(公告)日：1989-03-09

    申请号：DE3729144

    申请日：1987-09-01

    Applicant: BASF AG

    Inventor： BRONSTERT KLAUS DR ,  BOHNET SIEGBERT DR ,  HIMMELE WALTER DR ,  BOTT KASPAR DR

    IPC: C07F1/00 ,  C07F1/02 ,  C07F1/04 ,  C08F4/42 ,  C08F4/46 ,  C08F4/48 ,  C08F12/00 ,  C08F12/08 ,  C08F36/00 ,  C08F36/06

    Abstract: Bifunctional initiators for anionic polymerization are prepared by reacting an alkenylaromatic compound of the general formula I (I) where Ar is aromatic hydrocarbyl which may be substituted by alkyl or another group inert toward organoalkali metal compounds and may contain nitrogen, R1 is linear or branched alkyl, cycloalkyl, alkenyl or aralkyl or from 1 to 22 carbon atoms where at least the carbon adjacent to the double bond is saturated and aliphatic, R2 is hydrogen or is likewise linear or branched alkyl, cycloalkyl, alkenyl or aralkyl or from 1 to 22 carbon atoms where at least the carbon adjacent to the double bond is saturated and aliphatic, and where R1 and R2 may be part of a common cycloaliphatic ring, in the presence of one or more ethers and of tertiary amines and in the presence or absence of a further inert aliphatic, alicyclic or aromatic solvent, at from -20 DEG to +70 DEG C. with preferably lithium and with dimerization, with the use in addition of poly-cyclic aromatic hydrocarbons which catalytically promote the dimerization in amount of from 0.001 to 50, preferably 20, mol % and with or without the removal of the ethers and/or tertiary amines after the preparation, and are used for polymerizing anionically polymerizable monomers such as styrene.

    Substituted furans and their precursors
    157.
    发明专利
    Substituted furans and their precursors 未知

    公开(公告)号：DE3447793A1

    公开(公告)日：1986-07-10

    申请号：DE3447793

    申请日：1984-12-29

    Applicant: BASF AG

    Inventor： BECKER RAINER DR ,  THEOBALD HANS DR ,  HIMMELE WALTER DR

    IPC: C07C45/56 ,  C07D261/04 ,  C07D307/42 ,  C07D307/68 ,  C07F9/653

    Abstract: Isoxazoline of the general formula II in which R , R , R and R denote unsubstituted or halogen-, haloalkyl-, alkoxy-, haloalkoxy-, nitro-, cyano-, dialkylphosphonyl- or alkoxycarbonyl-substituted alkyl, aryl, aralkyl, alkoxycarbonyl or dialkoxyphosphonyl, R and R also denote hydrogen and R also denotes hydroxyalkyl, haloalkyl or hydroxyalkyl masked by a removable protective group, X denotes hydrogen or a removable protective group, and processes for the preparation of furans from the isoxazoles.

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