Dihydrobiphenylenes through ruthenium-catalyzed [2+2+2] cycloadditions of ortho-alkenylarylacetylenes with alkynes

1. García-Rubín, S.
2. González-Rodríguez, C.
3. García-Yebra, C.
4. Varela, J.A.
5. Esteruelas, M.A.
6. Saá, C.