NaNO<sub>2</sub>/I<sub>2</sub>-Mediated Regioselective Synthesis of Nitrosoimidazoheterocycles from Acetophenones by a Domino Process
作者:Sushobhan Mukhopadhyay、Shashikant U. Dighe、Shivalinga Kolle、Praveen K. Shukla、Sanjay Batra
DOI:10.1002/ejoc.201600553
日期:2016.8
regioselective synthesis of nitrosoimidazoheterocycles from the reaction of 2-aminopyridines and acetophenones in the presence of NaNO2 and I2 is described. The reaction is suggested to proceed by a domino process involving sequential imine formation, iodination, iodide displacement by the nitro group, and finally intramolecular cyclization. Reaction of these 3-nitrosoimidazo[1,2-a]pyridines with aldehydes