Phenyl substituted pyrrolinones
    2.
    发明授权
    Phenyl substituted pyrrolinones 失效
    苯基取代的吡咯烷酮

    公开(公告)号:US4749795A

    公开(公告)日:1988-06-07

    申请号:US34374

    申请日:1987-04-06

    摘要: The invention relates to pyrrolinones of formula (1) ##STR1## wherein R.sub.1 is an alkyl group containing at least 2 carbon atoms, an aralkyl group, an isocyclic or heterocyclic aromatic radical and R is an alkyl or aryl group.The invention also relates to aminodicarboxylates of formula (2) ##STR2## wherein R.sub.1 is a defined in claim 1 and R and R' are the same or different and are alkyl or aryl.The aminodicarboxylates of formula (2) are prepared by condensing a disuccinate of the formulaR'OOCCH.sub.2 CH.sub.2 COORwith a nitrile of the formula R.sub.1 CN, in the presence of a strong base and zinc chloride.The pyrrolinones of formula (1) are obtained by reacting the aminodicarboxylates of formula (2) in the presence of a strong base in an organic solvent.The compounds of formulae (1) and (2) are valuable intermediates for pigments.

    摘要翻译: 本发明涉及式(1)的吡咯啉酮(1)其中R1是含有至少2个碳原子的烷基,芳烷基,环状或杂环的芳基,R是烷基或芳基。 本发明还涉及式(2)的氨基二羧酸酯,其中R 1是权利要求1中定义的,R和R'相同或不同,并且是烷基或芳基。 在强碱和氯化锌的存在下,将式R'OOCCH2CH2COOR的二琥珀酸与式R 1 CN的腈缩合制备式(2)的氨基二羧酸酯。 式(1)的吡咯啉酮是通过在强碱存在下在有机溶剂中使式(2)的氨基二羧酸酯反应而获得的。 式(1)和(2)的化合物是颜料的有价值的中间体。