Synthesis of Benzannelated Cycl[3.2.2]azine: Benzo[a]cycl[3.2.2]azine

Abstract

A b s t r a c t -B e n z o [ ~l c y c 1 [ 3 .2 . 2 ] a z i i e (2) was synthesized from 6-cyanobenro[_a]~ndolizine 14) and dmethyl acetylenedicarboxylate.Recently, we prepared some benzannelated cycl[3.2.2]azines in order to study the effects of benro-fusion on cyc1[3.2.2la~ines.'~~There are two possible isomers of benzannelated cycl[3.2.2lazine derivatrves, benroIqlcycl[3.2.21azine