A simple enantioselective synthesis of (R)- and (S)-1,7-dioxaspiro[5.5]undecane via intramolecular asymmetric oxyselenenylation: a new route to optically active spiroketals

Both enantiomers of 1,7-dioxaspiro[5.5]undecane, the major pheromone components of the olive fruit fly (Bactrocea oleae), have been synthesized by using a new method based on the intramolecular asymmetric oxyselenenylation of 4-(3,4-dihydro-2H-pyran-6-yl)butan-1-ol.