trans-cyclooctene in further solvent(s) undecane as solvent, 26h, 85°C, under N2 or Ar; cooled, filtered;

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

in tetrahydrofuran; methanol heated to reflux; with exclusion of light;;

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;