4,15-Diamino[2.2]paracyclophane as a Starting Material for Pseudo-Geminally Substituted [2.2]Paracyclophanes
作者:Kamal El Shaieb、Vijay Narayanan、Henning Hopf、Ina Dix、Axel Fischer、Peter G. Jones、Ludger Ernst、Kerstin Ibrom
DOI:10.1002/ejoc.200390095
日期:2003.2
with a bridge consisting only of heteroatoms. Reduction of 4 with zinc/acetic acid affords the substrate 3 again. Treatment of 4 with bromine/iron powder or iodine monochloride causes deazotization accompanied by halogen introduction in pseudo-geminal position (i.e., formation of 2 and 6, respectively). Flashvacuumpyrolysis (450 °C, 0.01 Torr) of 4 produces the phenanthrene derivatives 13 and 14, while