in benzene byproducts: methane, ethane; cooling soln. of CH3CuP(C6H11)3 in toluene in a sealed Schlenk tube to -78°C; treating with 10percent soln. of trimethylaluminium (1 equiv.); warming to room temp.;; pptn. of metallic Cu after 20 h; trimethylaluminium phosphine adduct (detected by 1H- resp. 31P-NMR) was decomposed for elem. anal.;;

in benzene byproducts: methane, ethane, ethylene; slow addn. of soln. of (C2H5)3Al in benzene to soln. of CH3CuP(C6H11)3 in benzene at room temp.;; pptn. of metallic Cu; decanted soln. was degassed by several freeze-pump-thaw cycles; composition of the organoaluminium compd. was calculated after acidolysis;;