Oxazolidinone-Promoted, Torquoselective Nazarov Cyclizations

Oxazolidinones are powerful promoters of the Nazarov reaction, enabling the cyclization of conventionally resistant substrates to be achieved under mild conditions. They exert excellent regio- and torquoselective control in both the conventional Nazarov reaction giving cyclopentenones and in the interrupted Nazarov reaction, giving more highly substituted multistereocenter containing products.