Pd Nanoparticles Catalyzed Stereospecific Synthesis of β-Aryl Cinnamic Esters in Ionic Liquids

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Abstract
Reaction of the catalyst 1 or Pd(OAc)2 with tetrabutylammonium acetate, dissolved in tetrabutylammonium bromide, leads to a fast formation of Pd nanoparticles which efficiently catalyze the stereospecific reaction of cinnamates with aryl halides to give β-aryl-substituted cinnamic esters. The role of tetrabutylammonium acetate is crucial in determining the formation of nanoparticles and stereospecificity of the C−C coupling process.

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