Copper-Catalyzed Domino Synthesis of Benzimidazo[2,1-b]quin- azolin-12(6H)-ones Using Cyanamide as a Building Block
作者:Daoshan Yang、Yuyuan Wang、Haijun Yang、Tao Liu、Hua Fu
DOI:10.1002/adsc.201100580
日期:2012.2
A convenient copper-catalyzeddomino method for the synthesis of benzimidazo[2,1-b]quinazolin-12(6H)-ones has been developed via reactions of readily available substituted 2-bromo-N-(2-halophenyl)benzamides with cyanamide, in which cyanamide acts as a useful buildingblock.
通过容易获得的取代的2-溴-N-(2-卤代苯基)苯甲酰胺与苯的反应,开发了一种方便的铜催化多米诺骨牌合成苯并咪唑并[2,1 - b ]喹唑啉-12(6 H)-酮的方法。氰酰胺,其中氰酰胺可作为有用的结构单元。
The <i>N</i>-Aryl Aminocarbonyl <i>ortho</i>-Substituent Effect in Cu-Catalyzed Aryl Amination and Its Application in the Synthesis of 5-Substituted 11-Oxo-dibenzodiazepines
作者:Xiaoqiong Diao、Lanting Xu、Wei Zhu、Yongwen Jiang、Haoyang Wang、Yinlong Guo、Dawei Ma
DOI:10.1021/ol202721h
日期:2011.12.16
Double amination of ortho-substituted aryl bromides proceeded under mild conditions to afford 5-substituted 11-oxo-dibenzodiazepines, which revealed that there is a strong ortho-substituent effect caused by N-aryl aminocarbonyl groups during copper-catalyzed aryl amination.
Sequential Copper-Catalyzed Sonogashira Coupling, Hydroamination and Palladium-Catalyzed Intramolecular Direct Arylation: Synthesis of Azepino-Fused Isoindolinones
A sequential copper-catalyzed Sonogashiracoupling followed by intramolecular hydroamination and palladium-catalyzed intramolecular direct arylation reaction was developed to provide a convenient and modular approach for the synthesis of useful azepino-fused isoindolinones. Nineteen azepino-fused isoindolinones were prepared in good to high (22-81%) yields. The developed protocol tolerated various