triphenylphosphine; methyltrioxorhenium (VII) in benzene 2 h; Ambient temperature;

in acetonitrile T=25°C; second-order rate constants; ΔH(excit.), ΔS(excit.) at 25 deg C; further temp.; KineticsMechanismThermodynamic data;

in n-heptane Ar-atmosphere; 50°C (1 h), evapn. (vac.); CH2Cl2 addn., chromy. (SiO2, light petroleum / CH2Cl2 = 10 : 1, 5 : 1), recrystn. (light petroleum / CH2Cl2, -20°C); elem. anal.;