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Dihydrobiphenylenes through Ruthenium‐Catalyzed [2+2+2] Cycloadditions of ortho‐Alkenylarylacetylenes with Alkynes |
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| Authors: | Silvia García‐Rubín Carlos Gonzlez‐Rodríguez Cristina García‐Yebra Jesús A Varela Miguel A Esteruelas Carlos Sa |
| Abstract: | A new synthetic route to dihydrobiphenylenes has been developed. The process involves a mild RuII‐catalyzed 2+2+2] dimerization of ortho‐alkenylarylacetylenes or its more versatile variant, the Ru‐catalyzed 2+2+2] cycloaddition of ortho‐ethynylstyrenes with alkynes. Mechanistic aspects of this 2+2+2] cycloaddition are discussed. |
| Keywords: | [2+2+2]‐Cycloadditionen Alkine Biphenylene ortho‐Alkenylarylacetylene Ruthenium |