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2004
Phenanthrene derivatives
Q 1090
Synthesis of Polycyclic Aromatic Iodides via ICI-Induced Intramolecular Cycliza— An efficient synthesis of title compounds proceeds via reaction of 2-(arylethy45- 117 tion.
nyl)biphenyls with ICl at -78 °C. The targets are obtained in good to excellent yields.
In the cases of (IId), (IIe) and (IIf), ICl addition products (not defined) are obtained in
42, 31 and 17%, respectively. The methodology is successfully extended to aromatic
products with various organic functional groups and to systems containing a variety of
polycyclic and heterocyclic rings. — (YAO, T.; CAMPO, M. A.; LAROCK*, R. C.;
Org. Lett. 6 (2004) 16, 2677-2680; Dep. Chem., Iowa State Univ., Ames, IA 50011,
USA; Eng.) — Steudel
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