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Autor:
M. S. Yusubov, V. P. Vasil\\'eva, G. A. Zholobova, Ki-Whan Chi, Victor D. Filimonov, I. L. Filimonova
Publikováno v:
Russian Chemical Bulletin. 50:1051-1055
While heating 1,2,4,5-tetramethyl-3,6-bis(phenylethynyl)benzene, 1,3,5-trimethyl-2,4-bis(phenylethynyl)benzene, and 1,2,4,5-tetramethyl-3-(phenylethynyl)benzene with iodine in DMSO in the absence of oxygen, the triple bonds are oxidized to give the c