Lead tetraacetate mediated domino reactions on (R)-(−)-carvone-derived bicyclic unsaturated 1,2-diols and further rearrangements
作者:Elena M. Sanchez Fernandez、José I. Candela Lena、Ertan Altinel、Nicolas Birlirakis、Alejandro F. Barrero、Siméon Arseniyadis
DOI:10.1016/s0957-4166(03)00480-4
日期:2003.8
Carvone derived octaline diols 1 and 2 were subjected to Pb(OAc)4-mediated glycol fission conditions. The isolable ‘half-cascade’ intermediate 3 was subjected to ozonolysis in methylene chloride, and subsequent basic treatment, providing bis-angularly substituted bicyclic lactone 5 via an intramolecular Cannizzaro type oxidoreduction. The ring expanded products 4 and 6 subjected to basic treatment