Method of preparing .alpha.-arylalkanoic esters
    1.
    发明授权
    Method of preparing .alpha.-arylalkanoic esters 失效
    制备α-芳基链烷酸酯的方法

    公开(公告)号:US4745209A

    公开(公告)日:1988-05-17

    申请号:US839213

    申请日:1986-03-13

    CPC分类号: C07C323/00

    摘要: Alpha-arylalkanoic esters are prepared by reacting a trivalent iodine compound represented by the general formula:Ar--I.dbd.Owherein Ar is an aromatic hydrocarbon, group, with a carbonyl compound represented by the general formula ##STR1## wherein Ar.sup.1 is an aromatic hydrocarbon, R is a hydrogen atom or an alkyl group and R.sup.1 is a hydrogen atom or an alkyl group, in the presence of an orthocarboxylic ester.

    摘要翻译: α-芳基链烷酸酯通过使由通式Ar-I = O表示的三价碘化合物(其中Ar是芳香族烃基)与由通式“IMAGE”表示的羰基化合物反应,其中Ar 1是芳族烃 在原始羧酸存在下,R是氢原子或烷基,R 1是氢原子或烷基。

    .beta.-lactam compounds and production process thereof
    3.
    发明授权
    .beta.-lactam compounds and production process thereof 失效
    β-内酰胺化合物及其制备方法

    公开(公告)号:US5191074A

    公开(公告)日:1993-03-02

    申请号:US746083

    申请日:1991-08-12

    IPC分类号: C07D205/08 C07F7/08 C07F7/18

    摘要: A process for producing a .beta.-lactam compound of the formula ##STR1## wherein OR.sup.1 is a protected or unprotected hydroxyl group; R.sup.2 is a C.sub.1 to C.sub.7 alkyl or aryl group; from an azetidinone compound of the formula ##STR2## wherein X is an electronegative group removable through the reaction in three steps in which the second step subjects the .beta.-lactam compound obtained in the first step to silylation to convert the R.sup.2 group to the beta form.

    摘要翻译: 制备式“IMAGE”的β-内酰胺化合物的方法,其中OR1是被保护或未被保护的羟基; R2是C1-C7烷基或芳基; 其中X是通过三个步骤可以通过反应除去的电负性基团,其中第二步骤将第一步中获得的β-内酰胺化合物甲硅烷基化以将R2基团转化为β形式 。