Insect pheromones are a class of chemicals secreted by the glands of insects, which has been widely used in agriculture and forestry. When an insect pheromone comes into the practical stage, it is necessary to synthesize enough high-quality and inexpensive products for popularization and application. Chemical synthesis of insect pheromones is an important step in the study of insect pheromones, which can provide standard compounds for structural identification and test samples for indoor and outdoor bioactivity determination. Most of the identified and synthesized insect pheromones are long-chain unsaturated alcohols, acetate vinegars, aldehydes or ketones, with chain lengths ranging from 10 to 20 carbons. In addition to double bonds, most insect pheromones have a functional group at one end of the chain. With the improvement of synthetic technology, more and more kinds of insect pheromones can be synthesized and play an increasingly important role in pest control and other fields.
Chemical synthesis of insect pheromones is a very complex process, which usually involves many synthesis steps. Some basic methods are often used in the design of synthetic routes, including alkynyl routes, Wittig condensation reactions, Grignard coupling reactions and others.
At present, the most widely used synthetic pheromone is sex pheromone, which has been widely used in the field of pest control.