Intramolecullar alkylation of phenols. Part 4. Base-catalysed cyclisation of phenolic enones. Scope and limitations
作者:William S. Murphy、Sompong Wattanasin
DOI:10.1039/p19800001555
日期:——
The phenolicenones (4), (5), (8), (9), and (13) cyclise readily under acidic conditions. However, neither these nor the thin-substituted phenols (11a), (13a), (14a), and (15a) closed under basic conditions. Involvement of unfavourable equilibria is disproved. Comparison is made with related successful cyclisations of the saturated ketone (38) and aldehyde (39). Preliminary results suggest that strict