Reactions of chlorobenzene and bromobenzene with methyl acrylate using a conventional supported palladium catalyst |
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| Authors: | Fengyu Zhao and Masahiko Arai |
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| Affiliation: | (1) Supercritical Research Center, National Institute of Advanced Industrial Science and Technology, Sendai 983-8551, Japan;(2) Division of Materials Science and Engineering, Graduate School of Engineering Hokkaido University Hokkaido University, Sapporo 060-8628, Japan |
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| Abstract: | Reactions of bromobenzene and chlorobenzene with methyl acrylate were carried out in N-methylpyrrolidone (NMP) over a conventional Pd/C catalyst under Heck coupling conditions indicating both heterogeneous and homogeneous character. Benzene and biphenyl are produced in addition to the Heck coupling product of methyl cinnamate. It is proposed that the formation of methyl cinnamate and biphenyl proceed homogeneously with dissolved palladium species, while the formation of benzene takes place heterogeneously on the surface of supported palladium particles or free colloidal particles formed during the reaction. This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | product distribution Supported palladium catalyst chlorobenzene bromobenzene |
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