1: tetrahydrofuran; diethyl ether 2: chloroform-d1 View Scheme

in chloroform-d1 under Ar, Schlenk techniques;; NMR;

in acetone byproducts: MnO2; under Ar, Schlenk techniques; soln. of Au compd. in acetone treated withKMnO4 at 0°C, stirred for 30 min; MnO2 filtered off, evapd., NMR;