Tetradehydrodinaphthoannulene: A Hitherto Unknown Dehydroannulene and a Viable Precursor to Stable Zethrene Derivatives
datasetposted on 17.09.2009, 00:00 by Rui Umeda, Daijiro Hibi, Koji Miki, Yoshito Tobe
The synthesis and structural characterization of hitherto unknown tetradehydrodinaphthoannulene, a hydrocarbon whose synthesis had been attempted four decades ago, was achieved for the first time. Moreover, the dinaphthoannulene was transformed smoothly into stable zethrene derivatives substituted at its 7,14-positions, showing that it serves as a good reservoir of zethrene derivatives. Optical and electrochemical properties of a disubstituted zethrene derivative are also presented.