Journal of Organic Chemistry p. 4738 - 4742 (1995)
Update date:2022-08-03
Topics:
Blum, Jochanan
Baidossi, Wael
Badriech, Yacoub
Hoffman, Roy E.
Schumann, Herbert
Elemental tellurium catalyzes transfer of halogen from (CHCl2)2, from C2HCl5 and from (CHBr2)2, to the phenylated diynes 1-3, 17, 20, and 24, in which the alkyne moieties are in close proximity.The process is associated with cyclorearrangement reactions by which halogenated polycycles are formed.In boiling C2HCl5, derivatives of 1,2-bis(phenylethynyl)benzenes afford 5-halogenated indeno<2,1-a>indenes, 1,8-bis(phenylethynyl)naphthalene gives a chlorinated benzo
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