Synthesis of tetrasubstituted benzenes via rhodium(i)-catalysed ring-opening benzannulation of cyclobutenols with alkynes
作者:Takanori Matsuda、Norio Miura
DOI:10.1039/c3ob40436f
日期:——
A formal [4 + 2] annulation occurs between 1,3-disubstituted cyclobutenols and internal alkynes in the presence of rhodium(I) catalysts to afford 1,2,3,5-tetrasubstituted benzenes. These benzannulation products are generated through dehydration of the initially formed cyclohexadienols.