Visible-Light-Promoted and EDA Complex-Driven [4 + 2] Annulation for the Construction of Naphtho[1′,2′:4,5]imidazo[1,2-<i>a</i>]pyridines
作者:Wanting Feng、Ziren Chen、Fei Xue、Zuozhi Zhang、Bin Wang、Yonghong Zhang、Yu Xia、Weiwei Jin、Shaofeng Wu、Chenjiang Liu
DOI:10.1021/acs.orglett.4c00233
日期:2024.3.29
(EDA) complex-driven synthetic strategy for the construction of value-added naphtho[1′,2′:4,5]imidazo[1,2-a]pyridines from 2-arylimidazo[1,2-a]pyridines with Z-α-bromocinnamaldehydes has been accomplished under photocatalyst- and transition-metal-free conditions. This efficient annulation approach provides a new and straightforward pathway for the annulative π-extension of imidazo[1,2-a]pyridine-based
一种绿色可见光促进和电子供体-受体(EDA)复合物驱动的合成策略,用于从2构建增值萘并[1',2':4,5]咪唑并[1,2- a ]吡啶-芳基咪唑并[1,2- a ]吡啶与Z -α-溴肉桂醛在无光催化剂和过渡金属的条件下完成。这种有效的环化方法为咪唑并[1,2- a ]吡啶基芳烃的环化π延伸提供了一条新的、直接的途径。此外,该可持续方法还具有操作简单、底物范围广、条件良好和官能团相容性好的特点。