V. Rogers et al., Synthetic approaches to diazabiphenylenes: Synthesis of the carbon-nitrogen skeleton of 1,5- and 2,6-diazabiphenylene., HETEROCYC C, 6(2), 2000, pp. 133-136
The full carbon-nitrogen skeletons of the non-benzenoid heteroaromatic comp
ounds 1,5- and 2,6-diazabiphenylene have been prepared in two steps from ci
s, trans, cis-tricyclo[5.3.0.0(2,6)]-decane-3,8-dione. Intermediates of hig
her oxidation state that can serve as precursors to 1,5- and 2,6-diazabiphe
nylene derivatives have also been prepared.