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
描述了在 NaNO2 和 I2 存在下,2-氨基吡啶和苯乙酮反应的亚硝基咪唑杂环的区域选择性合成。建议该反应通过多米诺过程进行,包括依次形成亚胺、碘化、硝基取代碘,最后进行分子内环化。这些 3-亚硝基咪唑并 [1,2-a] 吡啶与醛在 Fe/AcOH 存在下的反应通过还原提供 5-取代的吡啶并 [2',1':2,3] 咪唑并 [4,5-c] 异喹啉亚硝基,然后在一锅中进行 Pictet-Spengler 反应。评估合成的化合物的抗菌和抗真菌活性。