At low temperatures ar>-llithium coinpounds react with aryliodoso dichlorides in ether, tetrahydrofuran or tolucllc ti1 give 20-50Y0 of diaryliodonium salts. More aryllithium compound or arylmagnesiurn halide converts the iodoniurn salt to a triaryliodine, from which the iodoiiiuni salt can be recovered in good yield by cleavage with acid A triarjliodine or an alkyldiaryliodine allowed to warm to 0" or above in ether gives products formed by ...
