1600520-07-7Relevant academic research and scientific papers
Selenium-Catalyzed Oxidative C-H Amination of (E)-3-(Arylamino)-2-styrylquinazolin-4(3 H)-ones: A Metal-Free Synthesis of 1,2-Diarylpyrazolo[5,1- b]quinazolin-9(1 H)-ones
Zhang, Yetong,Shao, Yinlin,Gong, Julin,Zhu, Jianghe,Cheng, Tianxing,Chen, Jiuxi
, p. 2798 - 2807 (2019)
A novel metal-free catalysis protocol for the synthesis of 1,2-diarylpyrazolo[5,1-b]quinazolin-9(1H)-ones via intramolecular oxidative C-H amination of (E)-3-(arylamino)-2-styrylquinazolin-4(3H)-ones has been developed in moderate to good yield. The metho
Domino synthesis of fused pyrazolo[5,1-b]quinazolin-9(1H)-ones catalyzed by CuI via subsequent Michael addition and elimination
Zhang, Yan,Xu, Jing,Li, Chao,Wang, Xiang-Shan
, p. 8732 - 8737 (2015/10/20)
A Domino reaction of 2-aminobenzohydrazides and 2-bromocinnamaldehydes is treated in the presence of CuI and Cs2CO3, and gives unexpected pyrazolo[5,1-b]quinazolin-9(1H)-one derivatives in good yields. A possible mechanism containing
Copper(I)-catalyzed synthesis of 1-arylpyrazolo[5,1-b]quinazolin-9(1H)-one via intramolecular alkyne hydroamination
Chen, Dong-Sheng,Zhang, Mei-Mei,Li, Yu-Ling,Liu, Yun,Wang, Xiang-Shan
, p. 2889 - 2893 (2014/04/17)
The 1-arylpyrazolo[5,1-b]quinazolin-9(1H)-one derivatives were obtained via intramolecular alkyne hydroamination reaction of 2-amino-N-arylbenzohydrazide and alkynal diethyl acetal in the presence of CuBr and Cs2CO 3. This new proced
