Enantioselective synthesis of 2-fluoro carboxylic acids from Trichloromethyl carbinols: an efficient approach to chiral fluorine introduction into insect sex pheromones
摘要:
Chiral syntheses of 2-fluoro carboxylic acids were achieved (ee greater than or equal to 92 %, yield 50-60 %) by stereoselective conversion (with inversion of configuration) of optically active trichloromethyl carbinols to fluoroacids with tetrabutylammonium fluoride. Fluorinated pheromone analogs of the European corn borer, Ostrinia nubilalis, and of the beet armyworm, Spodoptera exigua, were synthesized.
Enantioselective synthesis of 2-fluoro carboxylic acids from Trichloromethyl carbinols: an efficient approach to chiral fluorine introduction into insect sex pheromones
摘要:
Chiral syntheses of 2-fluoro carboxylic acids were achieved (ee greater than or equal to 92 %, yield 50-60 %) by stereoselective conversion (with inversion of configuration) of optically active trichloromethyl carbinols to fluoroacids with tetrabutylammonium fluoride. Fluorinated pheromone analogs of the European corn borer, Ostrinia nubilalis, and of the beet armyworm, Spodoptera exigua, were synthesized.