Synthesis and electronic properties of anthracene fully annelated with bicyclo[2.2.2]octene frameworks
作者:Akira Matsuura、Tohru Nishinaga、Koichi Komatsu
DOI:10.1016/s0040-4039(97)00637-0
日期:1997.5
Anthracene derivative 4 annelated with four bicyclo[2.2.2]octene (BCO) units was newly synthesized by the Diels-Alder reaction of BCO dimer with p-benzoquinone as a key reaction, and its electronic properties were investigated. The remarkable effect of BCO annelation was observed in its redox behavior, and 4 was readily transformed into stable cation radical 4+• and dication 42+.
Reactions of a novel benzyne annelated with two bicyclo[2.2.2]octene units
作者:Akira Matsuura、Tohru Nishinaga、Koichi Komatsu
DOI:10.1016/s0040-4039(97)00842-3
日期:1997.6
Anthranilicacid 9 and o-dibromobenzene 14 annelated with two bicyclo[2.2.2]octene units were synthesized as the precursors for titled benzyne 3. The generation of 3 was confirmed by trapping with furan and its derivative. In the absence of trapping agent, benzyne 3 generated by diazotization of 9 gave acridone 12 while that generated via lithiation of 14 dimerized to give BCO-annelated biphenylene