Preparation of p-hydroxybenzaldehyde derivatives
    3.
    发明授权
    Preparation of p-hydroxybenzaldehyde derivatives 失效
    对羟基苯甲醛衍生物的制备

    公开(公告)号:US4429163A

    公开(公告)日:1984-01-31

    申请号:US289991

    申请日:1981-08-04

    摘要: A 4-hydroxybenzaldehyde derivative of the formula: ##STR1## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is selected from the group consisting of hydrogen atom, halogen atoms, lower alkyl groups or lower alkoxy groups, which is useful as intermediate for the production of medicines or agricultural chemicals, or as flavor, is produced by the reaction of a p-cresol derivative of the formula: ##STR2## wherein each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is as defined above, with oxygen or oxygen-containing gas in the presence of a base and a catalytic amount of cobalt compound or metallic cobalt.

    摘要翻译: 下式的4-羟基苯甲醛衍生物:其中R1,R2,R3和R4各自选自氢原子,卤素原子,低级烷基或低级烷氧基,其可用作 通过下式的对甲酚衍生物(其中R1,R2,R3和R4各自如上所定义)的对甲酚衍生物的反应产生用于生产药物或农药或作为风味的中间体, 在碱和催化量的钴化合物或金属钴的存在下用氧或含氧气体。