1.
    发明专利
    失效

    公开(公告)号:JPH0143030B2

    公开(公告)日:1989-09-18

    申请号:JP18850381

    申请日:1981-11-26

    Applicant: BASF AG

    Abstract: 1. A process for the preparation of a mixture of ketals of trimethyl-p-benzoquinone, of the formula see diagramm : EP0053261,P4,F2 where R**1 and R**2 are alkyl of 1 to 4 carbon atoms and R**3 is R**2 O, or the two radicals R**3 together are oxygen, wherein an alkyl trimethylphenyl ether of the formula see diagramm : EP0053261,P4,F3 is oxidized electrochemically in the presence of an alkanol of the formula R**2 OH.

Patent Agency Ranking