dihydrogen peroxide; methyltrioxorhenium (VII) in chloroform-d1 T=20°C; 18 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
hydrogen; (dpp)Pd(OTf)2 in various solvent(s) T=110°C; P=60004.8 Torr; 20 h; other catalysts; also in the presence of various N,N'-disubstituted urea derivatives; Product distribution;