Synthesis of (+)-(R)-6-Ethyl-2,3-dihydro-2-methyl-4Hpyran-4-one -Sex-Pheromone Component of the Male Swift MothHepialus hectaL

Abstract
The synthesis of the male swift moth sex pheromone component, (+)-(R)-6-ethyl-2,3-dihydro-2-methyl-4H-pyran-4-one (6), from ethyl aniline and (S)-2-methyloxirane is described.