Synthesis of New 2-Benzazepino[4,5-a]naphthalene Derivatives via 1,7-Electrocyclisation of Nonstabilised Azomethine Ylides
作者:Miklós Nyerges、Tibor Novak、Zoltán Mucsi、Barbara Balázs、László Keresztély、Gábor Blaskó
DOI:10.1055/s-0030-1258036
日期:2010.10
Novel 2-benzazepino[4,5-a]naphthalene derivatives were synthesised efficiently via 1,7-electrocyclisation of nonstabilised azomethine ylides derived from 1-aryl- or 1-alkenyl-naphthalene-2-carbaldehyde derivatives. In some cases, surprisingly, pyrrole derivatives were isolated. A mechanism for the formation of the pyrrole byproduct is proposed.
新型 2-苯并氮杂卓[4,5-a]萘衍生物是由 1-芳基或 1-烯基-2-萘甲醛衍生物衍生的非稳定偶氮甲基酰化物通过 1,7 电环化作用高效合成的。在某些情况下,竟然分离出了吡咯衍生物。提出了形成吡咯副产物的机理。