Cu(II) Catalyzed Imine C–H Functionalization Leading to Synthesis of 2,5-Substituted 1,3,4-Oxadiazoles
作者:Srimanta Guin、Tuhin Ghosh、Saroj Kumar Rout、Arghya Banerjee、Bhisma K. Patel
DOI:10.1021/ol202409r
日期:2011.11.18
symmetrical and unsymmetrical 2,5-disubstituted [1,3,4]-oxadiazoles has been accomplished through an imine C–H functionalization of N-arylidenearoylhydrazide using a catalytic quantity of Cu(OTf)2. This is the first example of amidic oxygen functioning as a nucleophile in a Cu-catalyzed oxidative coupling of an imine C–H bond. These reactions can be performed in air atmosphere and moisture making it exceptionally
Reddy, P. S. N.; Reddy, P. Pratap, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1987, vol. 26, # 1-12, p. 890 - 891
作者:Reddy, P. S. N.、Reddy, P. Pratap
DOI:——
日期:——
Iodine-catalysed oxidative cyclisation of acylhydrazones to 2,5-substituted 1,3,4-oxadiazoles
作者:Ganesh Majji、Saroj Kumar Rout、Srimanta Guin、Anupal Gogoi、Bhisma K. Patel
DOI:10.1039/c3ra44897e
日期:——
An environmentally benign synthesis of 2,5-disubstituted 1,3,4-oxadiazoles has been developed starting from N-aroylhydrazones and N-acetylhydrazones at room or ambient temperature using a catalytic quantity of iodine in the presence of an aqueous hydrogen peroxide oxidant.
the complexes was evaluated using a gel electrophoresis assay which revealed that the complexes act as good DNAcleavage agents. In addition, all the complexes were subjected to antioxidant assay, which showed that they all possess significant scavenging activity against 2,2‐diphenyl‐2‐picrylhydrazyl, OH and NO radicals. The in vitro cytotoxic effect of the complexes examined on cancerous cell lines (HeLa