作者:Chada Raji Reddy、Sujatarani A. Panda、Motatipally Damoder Reddy
DOI:10.1021/ol503752k
日期:2015.2.20
Synthesis of substituted pyridines through a novel aza-annulation of 2-en-4-ynyl azides, derived from MBH-acetates of acetylenic aldehydes, is described. A variety of enynyl azides having aryl, heteroaryl, and alkyl groups on the alkyne functionality successfully participated in the Ag-mediated annulation reaction to provide the corresponding 3,6-disubstituted pyridines. I2-Mediated cyclization was
描述了通过衍生自炔醛的MBH-乙酸酯的新的2-en-4-炔基叠氮化物的氮杂-环烷基合成取代的吡啶。在炔官能团上具有芳基,杂芳基和烷基的各种烯丙基叠氮化物成功地参与了Ag介导的环化反应,以提供相应的3,6-二取代的吡啶。发现I 2-介导的环化受到炔官能团上的取代基的控制,所述取代基由炔炔官能团上具有富电子取代基的烯丙基叠氮化物提供了5-碘-3,6-二取代的吡啶。