本文通过铜催化氮杂-迈克尔加成、开环和( E )-3-溴环化制备了一类具有扩展π-系统的( E , E )-氨基金酮类化合物。 -2-苯乙烯基色酮和苯胺衍生物在碱存在下温和反应条件下。所有衍生物都表现出强烈的溶剂致变色吸收和发射特性,这使其成为传感应用的潜在化合物。芳环中吸电子取代基的存在对auron型衍生物的荧光行为有很大的影响。特别是 aurone 3h具有有希望的特征,不仅对于观察到的大斯托克斯,而且对于C-糖基部分的存在。我们得出结论,适当取代的 π 延伸氨基金可能可用作生物探针。
Efficient Syntheses of New Polyhydroxylated 2,3-Diaryl-9<i>H</i>-xanthen-9-ones
作者:Clementina M. M. Santos、Artur M. S. Silva、José A. S. Cavaleiro
DOI:10.1002/ejoc.200900026
日期:2009.6
between 3-bromo-2-methyl-4H-chromen-4-one and benzaldehydes, or through Baker–Venkataraman rearrangements of 2-acetylphenyl cinnamates, followed by one-pot bromination/cyclisation with phenyltrimethylammonium tribromide. The 2,3-diaryl-9H-xanthene-9-ones were obtained in one-pot transformations involving Heck reactions between (E)-3-bromo-2-styryl-4H-chromen-4-ones and styrenes, followed by electrocyclisation
Novel aurone-type compounds with an extended π-system: Synthesis and optical properties
作者:Sara M. Tomé、Raquel G. Soengas、Rosana Badía-Laíño、Artur M.S. Silva
DOI:10.1016/j.dyepig.2022.110569
日期:2022.9
In this paper, a novel family of (E,E)-aminoaurone-type compounds with an extended π-system has been developed, prepared via copper catalysed aza-Michael addition, ring opening, and cyclization between (E)-3-bromo-2-styrylchromones and aniline derivatives in the presence of base under mild reaction conditions. All derivatives showed strong solvatochromic absorption and emission properties, which make
本文通过铜催化氮杂-迈克尔加成、开环和( E )-3-溴环化制备了一类具有扩展π-系统的( E , E )-氨基金酮类化合物。 -2-苯乙烯基色酮和苯胺衍生物在碱存在下温和反应条件下。所有衍生物都表现出强烈的溶剂致变色吸收和发射特性,这使其成为传感应用的潜在化合物。芳环中吸电子取代基的存在对auron型衍生物的荧光行为有很大的影响。特别是 aurone 3h具有有希望的特征,不仅对于观察到的大斯托克斯,而且对于C-糖基部分的存在。我们得出结论,适当取代的 π 延伸氨基金可能可用作生物探针。