A Convergent and Highly Efficient Synthesis of (E,Z)-2,13-Octadecadienyl Acetate and (E,Z)-3,13-Octadecadienyl Acetate, Components of the Sex Pheromone of the Leopard Moth Zeuzera pyrina, through Sulfones

摘要

A new, convergent synthesis of (E,Z)-2,13-octadecadienyl acetate (1) and (E,Z)-3,13-octadecadienyl acetate (2), the two key components of the leopard moth Zeuzera pyrina, from 2-chloromethyltetrahydrofuran in good overall yields and stereomeric purity is reported. The synthesis of both components utilizes the common intermediate sulfone 12 as a convenient building block to be coupled with iodoacetylenic derivatives 9 or 17 in the key step.