Abstract The insect pheromone (2S, 3S, 7RS)-diprionyl acetate (1) was prepared from (S, S)- 2, 3-dimethylcyclohexanone (2), which in turn was obtained by the 1, 4-addition of lithium dimethylcuprate to (S)-(+)-carvone (3) and diastereoselective protonation of the resulting enolate with phenyl salicylate, followed by removal of the isopropenyl group and hydrogenation. Baeyer− Villiger rearrangement of (S, S)-2 and opening of the lactone (S, ...
