Process for the preparation of aryl-piridyl compounds
    25.
    发明授权
    Process for the preparation of aryl-piridyl compounds 有权
    芳基 - 吡啶基化合物的制备方法

    公开(公告)号:US08519144B2

    公开(公告)日:2013-08-27

    申请号:US10530080

    申请日:2002-10-02

    IPC分类号: C07D213/48

    CPC分类号: C07D213/51 C07D213/48

    摘要: A method is described for the preparation of aryl-pyridine compounds of formula (I) by cross-coupling reaction, promoted by catalytic systems based on palladium or nickel between compounds of formula (II) and (III) in which: -Met represents Mg or Zn, —Y represents Cl, Br, I or acetoxy, —Z represents I, Br, Cl, triflate, sulphonate, phosphate, —R1, R2, R3, R4, which are the same as one another or different, represent hydrogen, a linear and/or branched C1-C4 alkyl, and/or an aryl, and/or a heteroaryl, or R1 and R2 and/or R3 and R4, taken together, form a C3-C8 ring, an aryl and/or a heteroaryl, -A represents —COR5 where R5 represents hydrogen, a linear and/or branched C1-C4 alkyl, and/or an aryl, and/or a heteroaryl, or -A represents —CRs5(OR6)(OR7) where R5 has the meaning described above and R6 and R7, which are the same as one another or different, represent a linear and/or branched C1-C4 alkyl, and/or an aryl, and/or a heteroaryl, or R6 and R7, joined together, represent a C1-C8 alkyl or alkenyl.

    摘要翻译: 描述了通过交叉偶联反应制备式(I)的芳基 - 吡啶化合物的方法,由式(II)和(III)化合物之间的基于钯或镍的催化体系促进,其中:-Met表示Mg 或Zn,-Y表示Cl,Br,I或乙酰氧基,-Z表示彼此相同或不同的I,Br,Cl,三氟甲磺酸酯,磺酸酯,磷酸酯,-R1,R2,R3,R4,表示氢 ,线性和/或支链C 1 -C 4烷基和/或芳基和/或杂芳基,或R 1和R 2和/或R 3和R 4一起形成C 3 -C 8环,芳基和/或 杂芳基,-A表示-COR 5,其中R 5表示氢,直链和/或支链C 1 -C 4烷基和/或芳基和/或杂芳基,或-A表示-CR s(OR 6)(OR 7),其中R 5 具有上述含义,并且彼此相同或不同的R 6和R 7表示直链和/或支链的C 1 -C 4烷基和/或芳基,和/或杂芳基,或R 6和R 7连接 一起代表C1-C8烷基 1或烯基。

    Process for preparing an intermediate
    30.
    发明授权
    Process for preparing an intermediate 失效
    制备中间体的方法

    公开(公告)号:US5023365A

    公开(公告)日:1991-06-11

    申请号:US453791

    申请日:1989-12-20

    IPC分类号: C07C67/52

    CPC分类号: C07C67/52

    摘要: A process is described for preparing an intermediate in the synthesis of naproxen.The intermediate, namely the methyl ester of S(+)-2-(5-bromo-6-methoxy-2-naphthyl)-propionic acid or of its 5-chloro analogue, is prepared by preferential crystallization from mixtures with its enantiomer.

    摘要翻译: 描述了在萘普生合成中制备中间体的方法。 中间体即S(+) - 2-(5-溴-6-甲氧基-2-萘基) - 丙酸或其5-氯类似物的甲基酯通过与​​其对映异构体的混合物进行优先结晶来制备。