Copper(II)/Copper(I)-Catalyzed Aza-Michael Addition/Click Reaction of in Situ Generated α-Azidohydrazones: Synthesis of Novel Pyrazolone−Triazole Framework
作者:Orazio A. Attanasi、Gianfranco Favi、Paolino Filippone、Fabio Mantellini、Giada Moscatelli、Francesca R. Perrulli
DOI:10.1021/ol902642z
日期:2010.2.5
A one-pot Cu(II)-catalyzed aza-Michael addition of trimethylsilyl azide to 1,2-diaza-1,3-dienes and Cu(I)-catalyzed 1,3-dipolar cycloaddition of in situ generated α-azidohydrazones with alkynes is reported. This process combining two consecutive steps with recycling of the catalyst (Cu(OAc)2·H2O) represents a useful protocol for the smooth synthesis of novel pyrazolone−triazole derivatives.
一锅Cu(II)催化的三甲基叠氮化硅在1,2-二氮杂1,3,2-二烯上的Cu(II)催化的aza-Michael加成反应和Cu(I)催化的原位生成的α-叠氮hydr与1,3-偶极环加成反应炔烃的报道。该过程将两个连续的步骤与催化剂的循环利用(Cu(OAc)2 ·H 2 O)结合在一起,代表了平滑合成新型吡唑啉酮-三唑衍生物的有用方法。