CONJUGATED TRIENE COMPOUND, PREPARATION METHOD THEREFOR AND USE THEREOF

    公开(公告)号:EP3950665A1

    公开(公告)日:2022-02-09

    申请号:EP19922955.0

    申请日:2019-04-01

    摘要: Disclosed are a type of conjugated triene compounds (1), and a preparation and application thereof. In this method, a 2-(cyclohexenylidene)malonic acid derivative is sequentially subjected to isomerization, halogenation reaction in the presence of a halogenating agent and dehydrohalogenation to prepare the conjugated triene compounds (1). This disclosure further provides a method of preparing a 2-aryl malonic acid derivative from the conjugated triene compounds (1) through aromatization reaction. This disclosure has the following advantages:(1) the present disclosure provides a novel conjugated triene compound (1) and a preparation method thereof; and (2) such a novel compound with multifunctional groups can be used to synthesize other compounds of importance through a further functional group conversion reaction.

    METHOD FOR PREPARING ACRYLONITRILE DIMERS
    6.
    发明公开

    公开(公告)号:EP3862342A1

    公开(公告)日:2021-08-11

    申请号:EP20880345.2

    申请日:2020-10-14

    申请人: LG CHEM, LTD.

    摘要: The present invention relates to a method of producing an acrylonitrile dimer, the method including: feeding an acrylonitrile monomer, a nonpolar solvent, an alcohol solvent, and a phosphorus-based catalyst to a dimerization reactor to perform a dimerization reaction and reaction product to a distillation column; feeding the acrylonitrile monomer, the nonpolar solvent, and the alcohol solvent from the distillation column to the dimerization reactor; feeding an acrylonitrile dimer and the phosphorus-based catalyst from the distillation column to an extraction device; oxidizing the phosphorus-based catalyst by feeding water including an acid component to the extraction device to inactivate the phosphorus-based catalyst; and separating the inactivated phosphorus-based catalyst and the acrylonitrile dimer.