Polyene cyclizations using mercury(II) triflate-N,N-dimethylaniline complex-participation by internal nucleophiles

Article abstract of DOI:10.1016/S0040-4039(00)91704-0

The cyclization of a number of functionalized polyenes with mercuric triflate-N,N-dimethylaniline complex (Nishizawa's reagent) to give bicyclic or tricyclic products has been studied. Suitably positioneal internal nucleophiles, such as carbonyl, hydroxy and β-ketoester groups were found to participate to varying extent, in the termination of these cyclizations.