A New Class of Pyrazolopyridine Nucleus with Fluorescent Properties, Obtained through Either a Radical or a Pd Arylation Pathway from N-Azinylpyridinium N-Aminides

被引:43
作者
Abet, Valentina [1 ]
Nunez, Araceli [1 ]
Mendicuti, Francisco [2 ]
Burgos, Carolina [1 ]
Alvarez-Builla, Julio [1 ]
机构
[1] Univ Alcala de Henares, Dept Quim Organ, Madrid 28871, Spain
[2] Univ Alcala de Henares, Dept Quim Fis, Madrid 28871, Spain
关键词
D O I
10.1021/jo801549u
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
(Chemical Equation Presented) The synthesis of dipyridopyrazole and pyridopyrazolopyrazine derivatives - both of which incorporate a 3-aryl moiety - can be achieved in moderate yields by intramolecular radical arylation of pyridinium N-aminides using tris(trimethylsilyl)silane and azobisisobutyronitrile. Improved results were obtained on using Pd direct arylation in conjunction with microwave irradiation. A preliminary study into the fluorescent properties of the target compounds is also reported. © 2008 American Chemical Society.
引用
收藏
页码:8800 / 8807
页数:8
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