Synthesis of 1,2,4-Triazoles,<i>N</i>-Fused 1,2,4-Triazoles and 1,2,4-Oxadiazoles<i>via</i>Molybdenum Hexacarbonyl-Mediated Carbonylation of Aryl Iodides
protocol has been developed for the synthesis of 1,2,4‐triazoles, N‐fused 1,2,4‐triazoles and 1,2,4‐oxadiazoles using molybdenum hexacarbonyl where, for the first time, molybdenum hexacarbonyl acts as a convenient and reliable solid source of carbon monoxide. This procedure provides an easy access to a library of 1,2,4‐triazole, N‐fused 1,2,4‐triazole and 1,2,4‐oxadiazole derivatives in fair to good
Facile one pot synthesis of N-fused 1,2,4-triazoles via oxidative cyclisation using DDQ
作者:Ashish Bhatt、Rajesh K. Singh、Ravi Kant
DOI:10.24820/ark.5550190.p010.696
日期:——
Abstract A facile and expedient onepotsynthesis of N-fused1,2,4-triazoles from 2-hydrazinopyridines or 2hydrazinopyrazines and aldehydes is described viaoxidative cyclization usingDDQ as a safe and convenient oxidizing agent and polyethylene glycol as recyclable reaction medium. This protocol is effective toward various substrates having different functionalities. The easy recyclability of the
A novel approach for the synthesis of imidazo and triazolopyridines from dithioesters
作者:Ajjahalli B. Ramesha、Nagarakere C. Sandhya、Chottanahalli S. Pavan Kumar、Mahanthawamy Hiremath、Kempegowda Mantelingu、Kanchugarakoppal S. Rangappa
DOI:10.1039/c6nj01038e
日期:——
Various imidazo- and triazolo-pyridines were synthesised by the intramolecular cyclization of pyridine 2-methylamine and dithioesters under mild conditions.