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    • 2. 发明申请
    • UNSATURATED HYDROCARBON OLIGOMERIZATION METHOD
    • WO2023057928A1
    • 2023-04-13
    • PCT/IB2022/059516
    • 2022-10-05
    • UNIWERSYTET WARSZAWSKIJOZEF STEFAN INSTITUTE
    • LESZCZYNSKI, PiotrGROCHALA, WojciechJURCZAKOWSKI, RafałPOLCZYNSKI, PiotrKWIATKOWSKI, PiotrKAZIMIERCZUK, KrzysztofNAWROCKA, EwaJADWISZCZAK, MichalMAZEJ, Zoran
    • C10G29/20C10G50/00C10G29/205
    • An oligomerization method of unsaturated hydrocarbons having double bonds, proceeding in a liquid phase, in an organic medium, in a mixture of substrates mutually exhibiting a double bond system of the [2+2], [4+2] or [2+4] type, using a reaction initiating agent, according to the invention, characterized in that at least one of the substrates has an ionization potential lower than 9.33 eV or a redox potential lower than 2.0 V, at least one of the substrates has at least one double bond involved in the reaction that is not part of an aromatic ring, wherein the other substrate can react via a double bond system of the aromatic ring, as long as it has an electron delocalization energy in the aromatic ring lower than 18 kj/mol per aromatic carbon atom in the structure of that compound, and a solid silver(ll) salt is used as the initiating agent, which leads to the formation of a radical cation from a substrate of a lower ionization energy, which then reacts with another substrate molecule without a deprotonation step for that radical cation, and then transforming the resulting adduct into a neutral molecule with the formation of another radical cation from a substrate of a lower ionization energy, which radical cation further reacts in solution according to the same mechanism, wherein the process is carried out at 270-350 K, preferably at room temperature, in an apparatus made of a material which is chemically inert and inert with respect to silver(ll) salts, preferably in an apparatus with an inner surface made of glass, quartz, fluoropolymers or stainless steel, into which are introduced substrates and an anhydrous organic solvent, which is chemically inert, also with respect to the silver(ll) salt, and then the silver(ll) salt is introduced as an initiating agent, after which the apparatus is closed and the reaction is carried out for at least 24 hours, preferably for at least 72 hours, and then the solid silver compounds are recovered from the post-reaction mixture and subjected to regeneration, and the liquid phase is separated into a light fraction of dimeric cycloaddition products and heavier fractions of oligomeric linear addition products, from which pure products or mixtures of isomeric products are isolated, for example by chromatographic methods. The invention provides an unsaturated hydrocarbon oligomerization method, including the cycloaddition of unsaturated hydrocarbons, which makes it possible to carry out, under ordinary pressure and temperature conditions, reactions between reactants commonly regarded as inert.