Cascade and sequential palladium catalysed cyclisation-azide capture-1,3-dipolar cycloaddition route to complex triazoles
作者:Mihaly Gardiner、Ronald Grigg、Visuvanathar Sridharan、Nigel Vicker
DOI:10.1016/s0040-4039(97)10541-x
日期:1998.1
Palladium catalysed processes involving sequential cyclisation of aryl iodides onto proximate allenes with capture by NaN3 (and NaO2SPh) followed by a 1,3-dipolar cycloaddition reaction utilizing DMAD, methyl propiolate and norbornadiene are described. When utilising the latter, the sequence can be carried out as a one-pot protocol which terminates with a retro Diels-Alder reaction.
描述了钯催化的方法,该方法包括将芳基碘依次环化到最接近的丙二烯上,并被NaN 3(和NaO 2 SPh)捕获,然后利用DMAD,丙酸甲酯和降冰片二烯进行1,3-偶极环加成反应。当使用后者时,该序列可以作为一锅法进行,该一锅法以逆狄尔斯-阿尔德反应终止。