Copper-Catalyzed C-C Bond Cleavage/Double Cyclization of α-Ketoamides with o-Phenylene Diamines: Synthesis of Benzimidazo[1,2-<i>c</i>
]quinazolin-6-ones
作者:Liang-Hua Zou、Cheng Yan、Kai Shi、Liang Su、Shuai Zhu、Zhe-Kang Jia、Qiuan Wang
DOI:10.1002/ejoc.201901642
日期:2019.12.19
α‐Ketoamides have been successfully employed to synthesize benzimidazo[1,2‐c]quinazolin‐6‐ones through C–C bond cleavage/double cyclization, in which two new C–N and one new C=N bonds are simultaneously formed by copper catalysis under air atmosphere. This new protocol provides an important foundation for the preparation of benzimidazo[1,2‐c]quinazolin‐6‐ones in high yields.
α-酮酰胺已成功用于通过C-C键裂解/双环化反应合成苯并咪唑[1,2 - c ]喹唑啉-6-酮,其中两个新的C–N和一个新的C = N键通过大气气氛下铜的催化作用。该新方案为高产率制备苯并咪唑[1,2 - c ]喹唑啉-6-酮提供了重要的基础。