Synthesis of the Sex Pheromone of the Female Angoumois Grain Moth and Its Geometric Isomers123

(Z)-7, (E)-11-Hexadecadienyl acetate, the sex pheromone of Sitotroga cerealella (Olivier), and its 3 geometric isomers were synthesized by using 3-octyn-1-ol and 6-chloro-1-hexanol as starting materials. The synthetic and natural pheromones elicited identical behavior in laboratory bioassay.