Fuente: WIPO "tomato" The present invention is related to a simple process of preparing the sex pheromones, (3E, 8Z, 11Z)-tetradeca-3,8,11-trienyl acetate (Compound A) and (3E,8Z)-tetradeca-3,8-dienyl acetate (compound B) through an integrated approach wherein cross-metathesis and the Wittig reaction are judiciously combined to achieve a highly efficient and concise synthesis of (3E, 8Z, 11Z)-tetradeca-3,8,11-trienyl acetate (Compound A) and (3E,8Z)-tetradeca- 3,8-dienyl acetate (compound B) to obtain in higher yields.