Internal dianhydride of 2 2' 3 3'-tetracarboxy benzophenone
    5.
    发明授权
    Internal dianhydride of 2 2' 3 3'-tetracarboxy benzophenone 失效
    2 2'3 3'-TETRACARBOXY BENZOPHENONE的内部二氢

    公开(公告)号:US3652598A

    公开(公告)日:1972-03-28

    申请号:US3652598D

    申请日:1963-10-08

    CPC classification number: C07C65/34

    Abstract: THE NOVEL ANHYDRIDES OF MY INVENTION CAN BE REPRESENTED IN GENERAL BY THE FOLLOWING STRUCTURAL FORMULA:

    R-CO-R

    WHEREIN R IS A PHENYL RADICAL CONTAINING A CARBOXYLIC ANHYDRIDE GROUP, I.E. A GROUP HAVING THE STRUCTURAL FORMULA:

    -CO-OOC-

    WHICH IS ATTACHED TO ADJACENT POSITIONS ON SAID PHENYL RADICAL. THE REMAINING PROSITIONS ON SAID PHENYL RADICAL MAY BE SUBSITUTED WITH VARIUS ARYL RADICALS; SPECIFIC EXAMPLES OF SUCH SUBSTITUTED DIANBYDRIDES ARE THE PHENYL-SUBSTITUTED TETRACARBOXYLIC DIANHYDRIDES, CARBOXYPHENYL-SUBSTITUTED TETRACARBOXYLIC DIANHYDRIDES, CARBONYNAPHTHYLSUBSTITUTED TETRACARBOXYLIC DIANHYDRIES, CARBOXYBENZOYLSUBSTITUTED TETRACARBOXYLIC DIANHYDRIDES, AND THE LIKE, WHEREIN THE DIANHYDRIDE GROUPS ARE IN THE 2,3,2'',3'', AND 3,4,3'',4'' POSITIONS.

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