Synthesis of Z-6-Heneicosen-11-One, a Possible Pheromone Component of the Hickory Tussock Moth, <em>Lophocampa caryae</em>

The compound Z-6-heneicosen-11-one, a possible pheromone component of the hickory tussock moth, Lophocampa caryae, and a known pheromone component of the Douglas fir tussock moth, Orgyia pseudotsugata, was synthesized by a new four step procedure with a 39% overall yield and a six-step procedure incorporating a protecting group with a 28% overall yield. This new synthesis is comparable to other similar syntheses for this molecule in the literature.