Banca de DEFESA: IGOR FERREIRA PEREIRA DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : IGOR FERREIRA PEREIRA DA SILVA
DATE: 31/08/2021
TIME: 09:00
LOCAL: PLATAFORMA GOOGLE MEET - VIDEOCONFERÊNCIA
TITLE:

SYNTHESIS OF CANDIDATE MOLECULES OF LEPIDOPTERA PEST PHEROMONE

KEY WORDS:

pheromone, synthesis, Telchin licus, Hypsipyla ferrealis, Automeris liberia

PAGES: 122
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

 

Agriculture has great importance in the Brazilian economy and the presence of pests has caused great
economic losses for producers of the most diverse crops in Brazil. One of them is Telchin licus, a pest that
causes losses of sugar cane production in all regions where it is present. Andiroba is a tree with high
potential for exploration, from its seeds an oil widely used in cosmetics and popular medicine in the
Amazon region is extracted and it has also suffered from the presence of pests, especially Hypsipyla
ferrealis, which attacks the seed, making its use impracticable. In oil palm and coconut crops, defoliating caterpillars cause problems and the attack mainly by Automeris liberia has been causing damage to the arecaceae crops. As the use of pesticides can be harmful to health, the use of pheromones has become possible due to its great selectivity and low toxicity. To enable the use of pheromones for these pests, the aim of the work is to synthesize (Z,E)-2,13-octadecadien-1-ol and (E,Z)-2,13-octadecadien-1-ol isomers, (Z,E)-9,12-tetradecadien-1-ol, (E,Z)-9,12-tetradecadien-1-ol, (Z,Z)-9,12-tetradecadien-1-ol and (E,E)-9,12- tetradecadien-1-ol isomers and (±)-9-methylnonadecane which are candidates for pheromones of these species respectively. The syntheses have shown good individual yields and the compounds obtained have been characterized by hydrogen and carbon NMR and also by GC-MS. So far, (±)-9-methylnonadecane has been synthesized with an overall yield of 51.4%. Also 10-pentadecyn-1-ol, intermediate of (Z,E) and (E,Z)- 2,13-octadecadien-1-ol and the two isomers of 2-(tetradec-12-en-9-in -1-yloxy)tetrahydro-2H-pyran, which are intermediates for the formation of the 9,12-tetradecadien-1-ol isomers. All target molecules are expected to be properly synthesized and characterized.

BANKING MEMBERS:
Presidente - 1119939 - ANTONIO EUZEBIO GOULART SANTANA
Interno - 2089941 - DIMAS JOSE DA PAZ LIMA
Externo ao Programa - 2149347 - HENRIQUE FONSECA GOULART
Externa ao Programa - 1461121 - SILVIA HELENA CARDOSO