作者:Kunihide Fujimori、Hiroyuki Fukazawa、Yasuhiko Nezu、Kameji Yamane、Masafumi Yasunami、Kahei Takase
DOI:10.1246/cl.1986.1021
日期:1986.6.5
2-b]pyrrole-9-carboxylate, its [1,2-c] isomer, and the furan analogues are synthesized by the reaction of 3-methoxycarbonyl-2H-cyclohepta[b]furan-2-one with morpholino enamines of N-ethoxycarbonyl-3-oxopyrrolidine or 3-oxotetrahydrofuran. By the dehydrogenation of the resulting [1,2-b] isomers followed by demethoxycarbonylation, azuleno-[1,2-b]pyrrole and azuleno[1,2-b]furan are obtained, respectively.
新的杂环化合物、甲基 1,2-dihydroazuleno[1,2-b]pyrrole-9-carboxylate、其 [1,2-c] 异构体和呋喃类似物是通过 3-甲氧基羰基-2H-环庚酯的反应合成的[b]furan-2-one 与 N-乙氧基羰基-3-氧代吡咯烷或 3-氧代四氢呋喃的吗啉代烯胺。通过将得到的 [1,2-b] 异构体脱氢,然后进行脱甲氧基羰基化,分别获得薁基-[1,2-b] 吡咯和薁基 [1,2-b] 呋喃。