The Nucleophilic Reaction Of Propiolic Acid Ramification And Research Of The Polymerization

Due to the especial configuration of acetylenic ramification,the series of the substance polymerization are easy to gained the conjugate polymers.It make the polymer widely used in electrically conductive polymer,cell battery, organic light apparatus,magnetism,molecule anti-collision sensor,and so on. And through joined the different side group,it can make the polymer have new functional properties such as electroptic activity,photonic responsiveness, and biologiccompatibility.¹H-NMR,IR of P-ethylic propiolate initiated by n-BuLi /[Rh(nbd)cl]₂/(CH₃)₆Si₂NH,n-BuLi/CuI/(C₆H₁₁)₂NH,St-Li,Ip-Li,indicated that these initiators can initiator the ethylic propiolate,but the conversion is low,also have many side reactions,the polymer is hard to solve.And the initiator of the n-BuLi/Pd(Ph₃P)₄,n-BuLi/(Ph₃P)₂NiCl₂ can not initiate ethylic propiolate.Use some nucleophilic reagent to polymerization the methyle propiolate. The reasults indicate that Na,Nail,CH₃ONa,n-BuLi,every of them can initiate the methyle propiolate,the conversion is high,some of them can reach 90%.The temperature of the reaction between -20～70℃for 24h.But the mechanism of these initiates are different,¹H-NMR,IR of the P-methyl propiolate by these nucleophilic regent indicated that these reactions have several nucleophilic reactions.Finally,try to use n-BuLi/[Rh(nbd)cl]₂/(CH₃)₆Si₂NH,n-BuLi/CuI/ (C₆H₁₁)₂NH,to initiate the propiolamide,the reasult of the polymerization is also have many side reactions,the conversion is also low,the polymer is hard to separate.