作者:Alissa C. Götzinger、Florian A. Theßeling、Corinna Hoppe、Thomas J. J. Müller
DOI:10.1021/acs.joc.6b01326
日期:2016.11.4
ondensation syntheses of pyrazoles and pyrimidines were developed by taking advantage of the provisional, sequentially Pd-catalyzed one-pot generation of alkynones from aryl iodides, ethynylmagnesium bromide, and acid chlorides. This one-pot methodology allows the concise, diversity-oriented generation of a set of donor-, acceptor-, and donor–acceptor-substituted pyrazoles, which are interesting fluorophores
吡唑和嘧啶的连续四组分偶联-偶联-环缩合反应是利用芳基碘化物,乙炔基溴化镁和酰氯的临时,顺序钯催化的一锅法生成的,从而开发了吡唑和嘧啶。这种一锅法方法可以简洁,面向多样性地生成一组供体,受体和供体受体取代的吡唑,这是有趣的荧光团。最明显的是,供体-受体吡唑显示出明显的红移发射最大值,并具有明显的正溶剂变色性,整个范围从363 nm(环己烷)到595 nm(乙腈)。DFT和TD-DFT计算可阐明电子结构和光物理行为。在光子激发下,明显的电荷转移特性变得明显,