1370643-38-1Relevant academic research and scientific papers
Copper-catalyzed C-O bond cleavage and cyclization: synthesis of indazolo[3,2-b]quinazolinones
Qiao, Rui,Ye, Leping,Hu, Kun,Yu, Shuling,Yang, Weiguang,Liu, Miaochang,Chen, Jiuxi,Ding, Jinchang,Wu, Huayue
, p. 2168 - 2173 (2017/03/17)
The first example of a copper-catalyzed halogen-free protocol to construct indazolo[3,2-b]quinazolinones was developed through sequential inert C-O bond cleavage followed by intramolecular C-N bond formation. This protocol represents an efficient synthetic tool for accessing a more diverse range of functionalized indazolo[3,2-b]quinazolinones. The structure of the newly synthesized indazolo[3,2-b]quinazolinones was unambiguously confirmed by X-ray crystal diffraction analysis.
Palladium-Catalyzed Cascade Reaction of 2-Amino-N′-arylbenzohydrazides with Triethyl Orthobenzoates To Construct Indazolo[3,2-b]quinazolinones
Yang, Weiguang,Qiao, Rui,Chen, Jiuxi,Huang, Xiaobo,Liu, Miaochang,Gao, Wenxia,Ding, Jinchang,Wu, Huayue
, p. 482 - 489 (2015/08/18)
A palladium-catalyzed sequential cyclization/C-H activation cascade reaction of 2-amino-N′-arylbenzohydrazides with triethyl orthobenzoates has been developed, providing indazolo[3,2-b]quinazolinones in good to high yields. Two key intermediates of the re
Pd-catalyzed intramolecular aerobic oxidative C-H amination of 2-aryl-3-(arylamino)quinazolinones: Synthesis of fluorescent indazolo[3,2-b]quinazolinones
Yang, Weiguang,Chen, Jiuxi,Huang, Xiaobo,Ding, Jinchang,Liu, Miaochang,Wu, Huayue
supporting information, p. 5418 - 5421 (2015/02/19)
A palladium-catalyzed intramolecular aerobic oxidative C-H amination of 2-aryl-3-(arylamino)quinazolinones has been developed, providing a variety of substituted indazolo[3,2-b]quinazolinone derivatives in moderate to excellent yields. Preliminary mechani
Copper(I)-catalyzed synthesis of 5-arylindazolo[3,2- b ]quinazolin-7(5 H)-one via ullmann-type reaction
Chen, Dong-Sheng,Dou, Guo-Lan,Li, Yu-Ling,Liu, Yun,Wang, Xiang-Shan
, p. 5700 - 5704 (2013/07/25)
The treatment of 2-amino-N′-arylbenzohydrazide and o-halogenated benzaldehyde in the presence of CuBr and Cs2CO3 gave 5-arylindazolo[3,2-b]quinazolin-7(5H)-one in high yields. This procedure contains an Ullmann-type reaction and prov
A new cascade reaction: Concurrent construction of six and five membered rings leading to novel fused quinazolinones
Siva Kumar,Mahesh Kumar,Sreenivasa Rao,Jafar, Ahamed A.,Meda, Chandana Lakshmi T.,Kapavarapu,Parsa, Kishore V. L.,Pal, Manojit
experimental part, p. 3098 - 3103 (2012/05/07)
A one-pot cascade reaction has been developed leading to the concurrent construction of six and five membered fused N-heterocyclic rings of indazolo[3,2-b]quinazolinones. The methodology involved the reaction of isatoic anhydride, a hydrazine and o-iodo b
