Hesse
American Chemical Journal, 1896 , vol. 18, p. 725
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Ott; Loepmann
Chemische Berichte, 1922 , vol. 55, p. 1260
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Ott; Finken
Chemische Berichte, 1925 , vol. 58, p. 1703
in 1,1,2,2-tetrachloroethylene; chloroform refluxing of soln. of educts (8 h), distn. of solvent, warming of residue at 100-150°C and 20-40 Torr (2 h); sublimation, recrystn. (twice) from chlorobenzene;
参考文献
Journal of the American Chemical Society, , vol. 80, p. 2775 - 2778