T=73°C; 96 h; Yield given;

T=94°C; 240 h; Yield given;

in benzene T=80°C; 96 h; Yield given;

in benzene T=80 - 83°C; 408 h; Yield given;

lithium chloride in tetrahydrofuran; N,N-dimethyl-formamide addn. of soln. of C4H9ZnI in DMF to soln. of CuCN (20 mmol) and LiCl (40 mmol) in mixt. of dry DMF and dry THF at -40°C; warming suspension to 0°C, cooling to -60°C after 5 min; addn. of (ICH2)2Hg (3 mmol) from powder funnel;; addn. of methanol after 15 h at -60°C; workup after warming to 0°C; purity 95percent (impurities: 2percent (C4H9)2Hg and 2percent (C6H13)2Hg);;

trans-cyclooctene in further solvent(s) undecane as solvent, 21h, 85°C, under N2 or Ar; cooled, filtered;

trans-cyclooctene in further solvent(s) solvent was undecane and cyclooctene, under N2 or Ar, (ICH2)2Hg, HgI2 and cyclooctane were heated at 50°C for 15 min, undecane, further cyclooctene and Bz2Hg was added, heated at 85°C for 12h;

T=55°C; 840 h; Yield given;

T=72°C; 480 h; Yield given;