Syntheses of Both Enantiomers of 1,7-Dioxaspiro[5.5]undecane: Pheromone Components of the Olive Fruit-Fly Dacus oleae from a New Chiral Intermediate, the (SS)-2-(p-Tolylsulfinyl)prop-2-en-1-ol - Hayes, Patricia; Maignan, Christian (Synthesis, 1999)