Treatment of ether-bridged cyclooctatrienes (formed via intramolecular [4 + 4]-photocycloaddition of pyran-2-ones bearing pendent furans, followed by thermal decarboxylation) with excess MeLi furnishes triquinane ring systems via an apparent sequence of beta-elimination, 1,5-hydrogen shift, and transannular aldolization.
Cyclooctatrienes from pyran-2-ones via a tandem [4 + 4]-photocycloaddition/decarboxylation process
作者:Lei Li、Charles E. Chase、F. G. West
DOI:10.1039/b806871b
日期:——
Irradiation of pyran-2-ones bearing pendent furans in aqueous MeOH followed by heating furnished fused bicyclic products containing a cyclooctatriene ring.
Treatment of ether-bridged cyclooctatrienes (formed via intramolecular [4 + 4]-photocycloaddition of pyran-2-ones bearing pendent furans, followed by thermal decarboxylation) with excess MeLi furnishes triquinane ring systems via an apparent sequence of beta-elimination, 1,5-hydrogen shift, and transannular aldolization.