RhCl3/amine-catalyzed [2+2+2] cyclization of alkynes |
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| Authors: | Kenta Yoshida Hideo Tanaka |
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| Institution: | Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan |
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| Abstract: | The RhCl3·3H2O/i-Pr2NEt-catalyzed 2+2+2] cyclotrimerization of alkynes has been achieved. The reaction can be widely used for various alkynes and provides tri- or hexa-substituted benzenes regioselectively in high yields. The 2+2+2] cycloaddition of diynes and alkynes is also developed, and it affords benzene derivatives in moderate to high yields. |
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| Keywords: | Rh/amine catalyst Cyclotrimerization Hexa-substituted benzene |
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