Enantiospecific generation of anti-aldol adducts via conjugate addition to 5-methylene-1,3-dioxan-4-ones
作者:Michael Piber、James W. Leahy
DOI:10.1016/s0040-4039(98)00183-x
日期:1998.4
Michael additions to the exocyclic olefins of optically pure dioxanones (prepared via the asymmetric Baylis-Hillman reaction) are studied. The products can be obtained in excellent diastereoselectivity to ultimately provide products equivalent to those derived via anti aldol additions. Quaternary centers can also be created with good selectivity via this protocol.