1009630-24-3Relevant articles and documents
Pyrazolo-fused 4-azafluorenones as key reagents for the synthesis of fluorescent dicyanovinylidene-substituted derivatives
Orrego-Hernández, Jessica,Lizarazo, Carolina,Cobo, Justo,Portilla, Jaime
, p. 27318 - 27323 (2019/09/12)
A green process to access pyrazolo-fused 4-azafluorenones (indeno[1,2-b]pyrazolo[4,3-e]pyridines, IPP) 4a-xvia the three-component reaction between indan-1,3-dione (1), benzaldehydes 2 and 5-amino-1-arylpyrazoles 3 is described. These compounds were successfully used as precursors of the novel dicyanovinylidene derivatives 7a-d containing different acceptor (A) or donor (D) aryl groups at position 4 of its fused system. The structures of products obtained (4a-x and 7a-d) were determined based on NMR experiments, HRMS analysis, and X-ray diffraction studies for 7b. The photophysical and computational studies of 7a-d showed that these products are modulable ICT fluorophores, even some preliminary tests revealed that these compounds could be used as fluorescent chemodosimeters for cyanide detection.
Aqua mediated indium(III) chloride catalyzed synthesis of fused pyrimidines and pyrazoles
Khurana, Jitender M.,Chaudhary, Ankita,Nand, Bhaskara,Lumb, Anshika
experimental part, p. 3018 - 3022 (2012/08/08)
The utilization of water as solvent and indium trichloride as promoter for the three-component combinatorial synthesis of a variety of bioactive pyrimidine and pyrazole derivatives (2-10) from aldehydes, 1,3-dicarbonyl compounds, and electron-rich amino h
Three-component one-pot synthesis of indeno[2',1':5,6]pyrido[2,3-d]pyrazole derivatives in aqueous media
Shi, Da-Qing,Shib, Jing-Wen,Yaob, Hao
experimental part, p. 504 - 509 (2010/06/11)
Aseries of indeno[2',1':5,6]pyrido[2,3-d]pyrazoles was synthesized by the three-component reaction of aldehyde, 5-amino-3-methyl-1-phenylpyrazole and 1,3-indenedione in the presence of SDS in aqueous media. The structures were characterized by IR, 1
A facile synthesis of furo[3,4-e]pyrazolo[3,4-b]pyridine-5(7H)-one derivatives via three-component reaction in ionic liquid without any catalyst
Shi, Da-Qing,Yang, Fang,Ni, Sai-Nan
experimental part, p. 469 - 476 (2009/08/17)
(Chemical Equation Presented) A series of furo[3,4-e]pyrazolo[3,4-b] pyridine-5(7H)-one and indeno[2,1-e]pyrazolo[3,4-b]pyridine-5(1H)-one derivatives were synthesized via the three-component reaction of an aldehyde, 5-aminopyrazole and either tetronic ac
A novel and efficient one-pot synthesis of furo[3′,4′:5,6]pyrido[2,3-c]pyrazole derivatives using organocatalysts
Shi, Chun-Ling,Shi, Da-Qing,Kim, Sung Hong,Huang, Zhi-Bin,Ji, Shun-Jun,Ji, Min
, p. 2425 - 2432 (2008/09/18)
A novel approach to one-pot synthesis of dihydrofuro[3′,4′:5,6]pyrido[2,3-c]pyrazole and indeno[2′,1′:5,6]pyrido[2,3-c]pyrazole derivatives have been investigated using organocatalysts that are recyclable. This new protocol has the advantages of environme
Regioselective three-component synthesis of novel indeno[1,2-b]-pyrazolo[4, 3-e]pyridines-fused derivatives of 4-azafluorenone alkaloid
Quiroga, Jairo,Cobo, Debora,Insuasty, Braulio,Abonia, Rodrigo,Cruz, Silvia,Nogueras, Manuel,Cobo, Justo
, p. 155 - 159 (2008/09/18)
(Chemical Equation Presented) New fused indeno[1,2-b]pyridine derivatives have been prepared in a multicomponent reaction from benzaldehydes, indanedione and the appropriate aminoheteroaryl compound. The simple methodology permitted the syntheses of a ser