5-Trifluoromethyl-2-isoxazolines with a quaternary carbon center bearing a CF3 group are part of an important class of heterocyclic compounds with remarkable biological activities, which make them promising synthetic targets in the fields of medicinal chemistry and agrochemistry.[1] Particularly since the discovery of the structurally unique 3, 5-diaryl-5- (trifluoromethyl)-2-isoxazoline derivatives A (Scheme 1; R1= R4=