Functionalized buta-1,3-diynyl- N -methylpyrazoles by sequential “diacetylene zipper” and Sonogashira coupling reactions
作者:Anastasiya I. Govdi、Alexandra E. Kulyashova、Sergey F. Vasilevsky、Irina A. Balova
DOI:10.1016/j.tetlet.2017.01.032
日期:2017.2
A reaction sequence consisting of the “Diacetylene zipper” of buta-1,3-diynes from internal to terminal isomers, followed by Sonogashira cross-coupling with 3-,4- or 5-iodopyrazoles, was investigated as a new approach to buta-1,3-diynyl-N-methylpyrazoles. Various pyrazoles bearing alkyl and hydroxyalkyl containing buta-1,3-diyne substituents in the 3-,4- or 5-position and functional groups at the neighboring
研究了由内部异构体到末端异构体的Buta-1,3-diynes的“二乙炔拉链”,然后将Sonogashira与3-,4-或5-碘吡唑交叉偶联的反应顺序,是一种新的Buta- 1,3-二炔基-N-甲基吡唑。得到了各种带有在3-,4-或5-位上含有buta-1,3-diyne取代基和在环的相邻位置上具有官能团的烷基和羟烷基的吡唑。