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■ The Effect of Benzannelation toward Cycl[3.2.2]azine. Synthesis and Physical Properties of Dibenzo[a,h]cycl[3.2.2]azine

Yoshinori Tominaga, Yoshihide Shiroshita, Yoshiro Matsuda, and Akira Hosomi

*Faculty of Pharmaceutical Sciences, Nagasaki University, 1-14, Bunkyo-machi, Nagasaki 852-8521, Japan

Abstract

Dibenzo[a,h]cycl[3.2.2]azine (2) was synthesized by the [2 + 8] cyclization reaction of 1-cyanoisoindolo[2,1-a]isoquinoline (6) with dimethyl acetylenedicarboxylate as a key step and the effect of dibenzo-annelation on the six- and five-membered ring parts of the cyc1[3.2.2]azine has been investigated.