3-Oxiranylprop-2-enals as synthetic building blocks. A facile route to (±)-aucantene and other selectively functionalized cyclohexenes
Abstract
[4 + 2]Cycloadditions of 1,3-dienes to the title compounds lead in one step to functionalized cyclohexenes with predictable stereochemistry, thus providing the basis for a route to (±)-aucantene in three steps with an overall yield of 63%.