in benzene 5 h; Heating;

in tetrahydrofuran; diethyl ether Ambient temperature;

water multistep reaction; 1.) CH2Cl2, diethyl ether, room temperature, 18 h, 2.) diethyl ether, CH2Cl2; other cyclic s-trans-enaminones, other Grignard reagents, other solvents, other temperature, presence of triethylamine, hexamethylphosphoramide, MgCl2; Product distributionMechanism;