in N,N-dimethyl acetamide; deuterated toluene T=-55 - -35°C; effect of solvents on the stability, ΔG(excit.), ΔH(excit.), ΔS(excit.); KineticsThermodynamic data;

water; methyltrioxorhenium (VII) in hexadeuterioacetone T=-55°C; Kinetics; Temperature;

in dichloromethane T=-60°C; 2.5 h;