The COT derivative 3 having rigid σ-frameworks has been newly synthesized and its X-ray structure determined; 3 is readily reduced to the dianion 32- in spite of severe steric hindrance. © 1991.
Komatsu, K., Nishinaga, T., Aonuma, S., Hirosawa, C., Takeuchi, K., Lindner, H. J., & Richter, J. (1991). Synthesis, structure, and reduction of the cyclooctatetraene tetra-annelated with bicyclo[2.2.2]octene frameworks. Tetrahedron Letters, 32(46), 6767–6770. https://doi.org/10.1016/S0040-4039(00)93598-6