Ready Access to Alkylidenecyclopentenones by Nazarov Cyclization/β-Elimination of 2-Hydroxyalkyl-1,4-dien-3-ones
作者:Owen Scadeng、F. G. West
DOI:10.1002/ejoc.201301537
日期:2014.3
followed by deprotonation of the resulting cyclopentenyl cation, and β-elimination of the exocyclic hydroxy group to form alkylidenecyclopentenones in moderate yield. The deprotonation step occurs with complete regioselectivity opposite to the hydroxyalkyl substituent, with preferential introduction of an endocyclicolefin. The transformation is tolerant of a variety of substituents and occurs under relatively