Tripinyltrioxanes
    8.
    发明授权
    Tripinyltrioxanes 失效
    三乙基三氧杂环己烷

    公开(公告)号:US4168270A

    公开(公告)日:1979-09-18

    申请号:US627611

    申请日:1975-10-31

    IPC分类号: C07D323/06 C07D323/04

    摘要: Tripinyltrioxanes of the general formula (I): ##STR1## in which the radicals Pin are either dextrorotatory (+) or laevorotatory (-) pinyl radicals; a process for the production of (I) by treatment of an enantiomeric mixture of (+)-3-formylpinane and (-)-3-formylpinane (II) with an acid in an organic solvent and fractional precipitation of the trimeric compound (I); and redissociation of (I) into the pure enantiomers (II) with a catalytic amount of an acid.

    摘要翻译: 通式(I)的三乙炔基三氧化物:其中基团Pin是右旋(+)或吡咯并( - ) - 哌啶基; (I)通过在有机溶剂中用酸处理(+) - 3-甲酰基正庚烷和( - ) - 3-甲酰基正庚烷(II)的对映异构体混合物来制备(I)的方法和三聚化合物(I ); 并用催化量的酸将(I)重新离解成纯对映异构体(II)。

    Preparation of benzaldehyde dialkyl acetals
    10.
    发明授权
    Preparation of benzaldehyde dialkyl acetals 失效
    制备苯甲醛二烷基缩醛

    公开(公告)号:US4539081A

    公开(公告)日:1985-09-03

    申请号:US623210

    申请日:1984-06-21

    IPC分类号: C07C43/307 C25B3/02

    CPC分类号: C25B3/02

    摘要: Benzaldehyde dialkyl acetals of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each alkyl, are prepared by electrochemical oxidation of an alkyltoluene of the formula ##STR2## by a process in which the electrolyte used contains from 60 to 90% by weight of an alkanol of the formula R.sup.2 OH, from 8.5 to 40% by weight of the alkyltoluene and from 0.01 to 1.5% by weight of an HO.sub.3 S-containing acid.

    摘要翻译: 其中R 1和R 2各自为烷基的通式为其中R 1和R 2各自为烷基的苯甲醛二烷基缩醛通过使用式Ⅱ的烷基甲苯的电化学氧化制备,其中使用的电解质包含60至90重量% 式R2OH的烷醇,8.5至40重量%的烷基甲苯和0.01至1.5重量%的含HO 3 S的酸。