Synthesis of Pyrrolo- and Pyrido[1,2-<i>a</i>]xanthene [1,9-<i>de</i>]azepines: A Study of the Azepine Ring Construction
作者:M. Carmen de la Fuente、Domingo Domínguez
DOI:10.1021/jo701568w
日期:2007.11.1
Pentacyclic pyrrolo- and pyrido[1,2-a]xanthene[1,9-de]azepines were synthesized in various oxidation states by assembling the azepine ring following two strategies: 7-endo-trig cyclization of the aryl radical derived from a γ-methylene lactam and cyclodehydration of aldehydes. Other strategies examined (Heck reaction and intramolecular acylation) did not afford azepines, but six-membered nitrogenated
通过以下两种策略组装氮杂环庚烷环,以各种氧化态合成五环吡咯并-和吡啶并[1,2- a ]]吨[ 1,9- de ]氮杂环庚烷:7-内-trig环化衍生自γ的芳基-亚甲基内酰胺和醛的环脱水。研究的其他策略(Heck反应和分子内酰化)没有提供氮杂s,而是提供了六元氮化环。