Denitrated C-C Coupling Reactions Of ?-Nitrostyrene With Alkenes And Aryl Diazonium Salts

Olefin compounds are an important class of organic synthesis intermediates,it is widely used in the field of synthetic drugs,natural products,dyes,optical materials,etc.For a long time,the chemical synthesis method caused many researchers attention,in addition to relying on traditional synthetic methods such as Wittig Reaction,Heck Reaction and so on,to find a simple and efficient method for the synthesis of more and more by chemical researchers'attention.In recent years,nitroalkene compounds as important intermediates in organic synthesis chemistry caused by more and more researchers.In this paper,a nitro group and olefin denitration coupling reaction and a series of olefin alkylation stilbene compounds.The main contents and results are as follows:1.Review denitrated coupling reaction of nitroalkenes.2.Use of cheap readily available Ni?acac?2 as a catalyst,triethoxysilane as a source of hydrogen,nitroalkene and olefin effectively synthesized a series of alkylated aromatic and aliphatic olefins,and preliminary discuss the reaction conditions and the reaction mechanism.3.Light induced,nitroalkene with aryl diazonium salt synthesized a series of stilbene compounds containing a variety of functional groups.The reaction system has the advantage that it does not require metal catalysis and no any ligand,and the reaction conditions are mild and simple,thereby providing an effective and relatively green synthetic stilbene compound method.All the products were characterized by ¹HNMR,¹³CNMR and HRMS spectroscopic analysis.