205-54-9Relevant articles and documents
High-temperature catalytic synthesis of quinolino[1,2-a]benzimid azole and some of its transformations
Varlamov,Krapivko,N'ende,Levov,Prostakov
, p. 459 - 461 (1996)
The possibility of synthesis of quinoline[1,2-a]benzimidazole from aniline and quinoline on a dehydrogenating mark K-16 catalyst at 560-580°C was demonstrated. It was established that in the nitration of quinolino[1,2-a]benzimidazole, a 10-nitro-derivative is formed, whereas in the reaction with ADCE, tetramethoxycarbonylquinolino[1,2-a]pyrido[2′,1′-b]benzimidazole is formed. 1996 Plenum Publishing Corporation.
Copper-Catalyzed Direct, Regioselective Arylamination of N-Oxides: Studies to Access Conjugated π-Systems
Biswas, Aniruddha,Karmakar, Ujjwal,Nandi, Shiny,Samanta, Rajarshi
, p. 8933 - 8942 (2017/09/11)
An efficient copper(I)-catalyzed direct regioselective arylamination of various heterocyclic N-oxides was achieved successfully under redox-neutral conditions using anthranils as arylaminating reagents. The developed protocol is simple, straightforward, and economic with a broad range substrate scope. The dual functional groups in the final molecules were utilized to construct structurally and functionally diverse nitrogen-containing organic π-conjugated systems.
C-H cycloamination of N-aryl-2-aminopyridines and N-arylamidines catalyzed by an in situ generated hypervalent iodine(iii) reagent
He, Yimiao,Huang, Jinbo,Liang, Dongdong,Liu, Lanying,Zhu, Qiang
, p. 7352 - 7354 (2013/09/23)
A metal-free synthesis of diversified pyrido[1,2-a]benzimidazoles and 1H-benzo[d]imidazoles from N-aryl-2-aminopyridines and N-arylamidines has been developed. The C-H cycloamination reaction was catalyzed by hypervalent iodine(iii) species generated in situ from iodobenzene (catalytic) and peracetic acid (stoichiometric). The reaction proceeded smoothly at ambient temperature to provide the corresponding N-heterocycles in good to excellent yields.