CuI Catalyzed Addition Reaction Of P(O)h Compounds With1,2-dichioroethylene

Alkenylphosphonates were attracted great attention because of their special structures.Hence, these phosphorus derivatives contain a carbon-carbon double bond which directlylinked to the phosphorus atom, so they have been used as intermediates in organic synthesis.For example, they were used as precursors of polyphosphines or dendrimers. Alkenyl-phosphonates were also used as dienophiles to generate heterocycle compounds whichcontain P-C bond in cycloaddition reactions. They are attracted great attention incoordination chemistry due to the presence of both the phosphorus atom and thecarbon-carbon double bond. Recently, alkenylphosphonates were also used as ligand forhomogeneous catalysis.A new mild and convenient method in the synthesis of vinylphosphonates has beenresearched because of numerous applications of alkenylphosphines in various fields ofchemistry. Hence, eight new compounds of vinylphosphonates and seven phosphite estershave been reported in the paper.1Eight novel Dichlorovinylphosphonates were synthesized by reactions of one pot withdichloroacetylene and phosphite esters in presence of CuI. The product structures werecharacterized by IR,1H NMR,13C NMR,31P NMR and elemental analyses.2A serious of phosphite esters were synthesized by the reaction of phosphorus trichloridewith alcohol in the benzene. The product structures were characterized by IR,1H NMR,13C NMR,31P NMR and elemental analyses.3(Z)-(1,2-Dichlorovinyl) diphenylphosphine oxide was synthesized by the reaction ofdichloroacetylene with diphenylphosphine oxide in presence of CuI. The crystalstructure of this compound was confirmed by X-ray diffraction.4The effect of experimental results had been investigated under different conditions whichwere included temperature, reaction time and molar ratio of reactants, etc.