Tripinyltrioxanes
    7.
    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 4-substituted but-3-ene-1-carboxylic acids and their
esters
    10.
    发明授权
    Preparation of 4-substituted but-3-ene-1-carboxylic acids and their esters 失效
    4-取代的丁-3-烯-1-羧酸及其酯的制备

    公开(公告)号:US4585594A

    公开(公告)日:1986-04-29

    申请号:US680514

    申请日:1984-12-11

    IPC分类号: C07C51/14 C07C67/36

    CPC分类号: C07C51/14 C07C67/38

    摘要: 4-Substituted but-3-ene-1-carboxylic acids and their esters R.sup.1 R.sup.2 C.dbd.CH--CH.sub.2 --CO--O--R.sup.3 (I, where R.sup.1 is an organic radical, R.sup.2 is H or R.sup.1, or R.sup.1 and R.sup.2 together form a 5-membered to 20-membered ring, and R.sup.3 is H or lower alkyl) are prepared by carbonylation of R.sup.1 R.sup.2 C(OH)--CH.dbd.CH.sub.2 (II) in the presence of an alcohol R.sup.3' --OH (III, where R.sup.3' is lower alkyl) or, for the preparation of the acids I alone, in the absence of an alcohol III, at from 50.degree. to 150.degree. C. and under from 200 to 700 bar, using a complex of a palladium halide and a tertiary organic phosphine.

    摘要翻译: 4-取代的丁-3-烯-1-羧酸及其酯R1R2C = CH-CH2-CO-O-R3(I,其中R1是有机基团,R2是H或R1,或R1和R2一起形成 5元至20元环,并且R 3为H或低级烷基)通过在醇R3'-OH(III)存在下R1R2C(OH)-CH = CH2(II)羰基化制备,其中R3' 低级烷基),或者为了单独制备酸I,在不存在醇III的条件下,在50-150℃和200-700巴条件下,使用卤化钯和叔有机物的络合物 膦。