123184-19-0Relevant articles and documents
Microwave-assisted synthesis and luminescent activity of imidazo[1,2-a]pyridine derivatives
Rodríguez, Juan C.,Maldonado, Rony A.,Ramírez-García, Gonzalo,Díaz Cervantes, Erik,de la Cruz, Fabiola N.
, p. 2279 - 2287 (2020/03/16)
In this work, a series of phenacyl bromide derivatives was synthesized and employed as key intermediate for the synthesis of substituted imidazo[1,2-a]pyridines. First, phenacyl bromide molecules were obtained from the bromination reaction of acetophenones assisted by microwave irradiation, obtaining the products 4a-v in a 15 minutes reaction with yields in the range of 50% to 99%. Subsequently, the conjugation of these molecules with 2-aminopyridine conduced to the production of imidazo[1,2-a]pyridine derivatives (7a-v) in a 60-second reaction with yields of 24% to 99%. Improved yields were determined with respect to those obtained with more tedious methodologies like thermally and mechanically assisted routes. Intense luminescence emissions in the purple and blue regions of the electromagnetic spectra were observed under UV excitation according to the nature of the substituents. This environmentally friendly methodology is expected to constitute an important class of organic compounds for the development of biomarkers, photochemical sensors, and medicinal applications.
Identification of a potent new chemotype for the selective inhibition of PDE4
Skoumbourdis, Amanda P.,Huang, Ruili,Southall, Noel,Leister, William,Guo, Vicky,Cho, Ming-Hsuang,Inglese, James,Nirenberg, Marshall,Austin, Christopher P.,Xia, Menghang,Thomas, Craig J.
, p. 1297 - 1303 (2008/09/20)
A series of substituted 3,6-diphenyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines were prepared and analyzed as inhibitors of phosphodiesterase 4 (PDE4). Synthesis, structure-activity relationships, and the selectivity of a highly potent analogue against related phosphodiesterase isoforms are presented.
A new approach to the synthesis of 2-aminoimidazo[1,2-a]pyridine derivatives through rapid parallel synthesis
Jaramillo, Carlos,De Diego, J. Eugenio,Hamdouchi, Chafiq
, p. 1544 - 1546 (2007/10/03)
Different substituted 6-(2,6-difluorobenzoyl)-imidazopyridines 3 have been prepared using rapid parallel synthesis. Key cyanamide intermediate 4 was prepared from chloropyridine 1, and alkylated at the endocyclic nitrogen with different bromoacetophenones (prepared also in rapid parallel synthesis fashion). Subsequent cyclization was performed in situ with EtOAc/H2O to give target molecules.
