Oxidative dearomatization and retro-Diels-Alder/Diels-Alder cascade: Synthesis and photoreactions of azepane annulated bicyclo[2.2.2]octenone
作者:Sushil Kumar Tripathi、Vishwakarma Singh
DOI:10.1016/j.tetlet.2018.12.038
日期:2019.1
Synthesis of azepane annulated bicyclo[2.2.2]octenone via oxidative dearomatization and intramolecular π4s + π2s cycloaddition has been described. Manipulation of the adduct led to tricyclic compounds having a β,γ-enone chromophore whose photoreaction upon triplet and singlet excitation furnished polycyclic systems having azepane ring systems.
氮杂环庚烷稠双环的合成[2.2.2] octenone通过氧化脱芳构化和分子内π 4 S +π 2小号环加成进行了说明。加合物的操作产生具有β,γ-烯酮发色团的三环化合物,其在三重态和单重态激发时的光反应提供了具有氮杂环化合物环系统的多环系统。
A tandem oxidative dearomatization/intramolecular Diels–Alder reaction: a short and efficient entry into tricyclic system of maoecrystal V
作者:Vishwakarma Singh、Pravin Bhalerao、Shaikh M. Mobin
DOI:10.1016/j.tetlet.2010.04.082
日期:2010.6
A short and efficient route to tricyclic ring system containing bridged bicyclo[2.2.2]octanone annulated with a lactone ring present in the maoecrystal is described. In-situ generation of spiroepoxycyclohexa-2,4-dienone and intramolecular cycloaddition are the key features of our approach. (C) 2010 Elsevier Ltd. All rights reserved.