Condensation of anthranilic acids with pyridines to furnish pyridoquinazolones via pyridine dearomatization
作者:Yajun Yang、Cuiju Zhu、Min Zhang、Shijun Huang、Jingjing Lin、Xiandao Pan、Weiping Su
DOI:10.1039/c6cc07365d
日期:——
The unprecedented carbodiimide-mediated condensation between pyridines and anthranilicacids via pyridines dearomatization at room temperature has been developed to provide a straightforward approach to pyridoquinazolones. The value of this approach...
Copper-Mediated Tandem C(<i>sp</i>
<sup>2</sup>
)-H Amination and Annulation of Arenes with 2-Aminopyridines: Synthesis of Pyrido-fused Quinazolinone Derivatives
作者:Jidan Liu、Jinhui Zou、Jiawei Yao、Guoshu Chen
DOI:10.1002/adsc.201701286
日期:2018.2.15
An efficient and convenient copper‐mediated tandem C(sp2)‐H amination and annulation of arenes with 2‐aminopyridines to provide 11H‐pyrido[2,1‐b]quinazolin‐11‐ones has been developed. A variety of benzamides and 2‐aminopyridines bearing different substituents are compatible with this transformation
开发了一种高效便捷的铜介导的串联C(sp 2)-H胺化和芳烃与2-氨基吡啶的环化反应,以提供11个H-吡啶并[ 2,1- b ]喹唑啉-11-酮的方法。各种带有不同取代基的苯甲酰胺和2-氨基吡啶与这种转化相容
Base-Controlled Selectivity in the Synthesis of Linear and Angular Fused Quinazolinones by a Palladium-Catalyzed Carbonylation/Nucleophilic Aromatic Substitution Sequence
A new approach for the facile synthesis of fused quinazolinone scaffolds through a palladium‐catalyzed carbonylative coupling followed by an intramolecular nucleophilic aromatic substitution is described. The base serves as the key modulator: Whereas DBU gives rise to the linear isomers, Et3N promotes the preferential formation of angular products. Interestingly, a light‐induced 4+4 reaction of the