lithium in tetrahydrofuran N2 atmosphere; addn. of the oxetane to a soln. of trimethylstannyllithium prepared from chlorotrimethylstannane and lithium at -78°C, stirring for 6 h at room temp.;; addn. of diethyl ether, washing with satd. NH4Cl soln., drying with Na2SO4, evapn. of the solvent, fractional distn.;

in not given refluxing for 5 h;;

potassium hydroxide in ethanol; water

benzophenone in benzene Kinetics; Irradiation (UV/VIS);

benzophenone in tetrachloromethane Irradiation (UV/VIS);