A General Synthesis of Bis(<i>o</i>-azaheteroaryl)methane Derivatives from<i>N</i>-Oxides of Azines and Azoles
作者:Magdalena Szpunar、Rafał Loska
DOI:10.1002/ejoc.201500072
日期:2015.4
A general method of preparation of derivatives of bis(o-azaheteroaryl)methanes from aromatic N-oxides is reported, the key step of which is a 1,3-dipolar cycloaddition between N-oxides of azines or azoles and in situ generated terminal difluoroalkenes containing an o-azaheteroaryl substituent at the double bond. Selected products were applied for the preparation of two novel unsymmetrical analogues
A series of azine-imidazole aza-BODIPY analogues has been prepared by a simple synthesis from 2-azinecarboxylic acids and imidazole N-oxides. The new fluorescent complexes exhibit largeStokesshifts (up to 10 000 cm−1), fluorescence in crystalline phase, high stability and fluorescence solvatochromism.
通过2-嗪羧酸和咪唑N-氧化物的简单合成已经制备了一系列的嗪-咪唑氮杂-BODIPY类似物。新的荧光配合物表现出大的斯托克斯位移(高达10000 cm -1),结晶相荧光,高稳定性和荧光溶剂变色。
A three-component synthesis of aryl(heteroaryl)acylamides
作者:Rafał Loska、Patrycja Bukowska
DOI:10.1039/c5ob01355k
日期:——
α-Heteroarylamides of diverse structures are assembled in a three-component reaction of azole or azineN-oxides, 1,1-difluorostyrenes and amines.