Cobalt-Catalyzed Dimerization of -Olefins to Give Linear -Olefin Products

J. Am. Chem. Soc., 127 (49), 17194 -17195, 2005. 10.1021/ja056655n S0002-7863(05)06655-2
Web Release Date: November 18, 2005

Cobalt-Catalyzed Dimerization of -Olefins to Give Linear -Olefin Products

Richard D. Broene,* Maurice Brookhart, William M. Lamanna, and Anthony F. Volpe, Jr.

Department of Chemistry, Bowdoin College, Brunswick, Maine 04011, Department of Chemistry, University of North Carolina, CB 3290, Venable Hall, Chapel Hill, North Carolina 27599-3290, and 3M Company, 3M Center, St. Paul, Minnesota 55144

rbroene@bowdoin.edu

Received September 28, 2005

Abstract:

[Cp*P(OMe)₃CoCH₂CH₃]⁺ [BarF]^-, generated by the addition of HBArF to Cp*P(OMe)₃Co(ethene)_, catalyzes the oligomerization of 1-hexene to give dimers and trimers. When a deficit of the acid is used, linear -olefin dimers are produced at the expense of trimeric products: e.g., 1-butene, 1-hexene, and 1-octene give 1-octene, 1-dodecene, and 1-hexadecene, respectively.

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