in methanol addn. of PhHgOCOCCl3 soln. to soln. of chloride with stirring, stirred for 30 min, pptn.; ppt. filtered, washed (water, methanol);

cyclohexene in benzene byproducts: CO, CO2, tetrachloroethylene, dichloronorcarane; mixture of PhHgOCOCCl3 with cyclohexene in C6H6 boiled for 10h, evolution of CO2 ceased after 2h, pptn.; further byproducts: CC3CO2H, COCl2; ppt. filtered, washed with benzene, dried;