Efficient and convenient syntheses of (R)-(-)-cryptone and (S)-(-)-isopropenyl-2-cyclohexen-1-one

Article abstract of DOI:10.1055/s-1992-26297

Starting with (+)-nopinone (3); (R)-(-)-cryptone (1) and (S)(-)-4-isopropenyl-2-cyclohexen-1-one (2) were synthesized in five steps and 42% overall yield, and four steps and 49% overall yield, respectively.