A NOVEL SYNTHESIS OF TRIFLUOROMETHYL ENONES AND ENEDIONES

Reactions of trifluoromethyl enamino ketones, E)-4-(dimethylamino)-1,1 ,1-trifluorobut-3-en-2-one (2) and methylene)-1,1,1,5,5,5-hexafluorope ntane-2,4-dione (3), with various types of lithium derivatives of arom atic or heteroaromatic compounds proceed with the formation of the cor responding aryl- or hetaryl-substituted trifluoromethyl enones and ene diones in good yields. The reactions of enamino ketone 2 proceed stere ospecifically, only (E)-isomers of the enones being formed.