Synthesis and optical properties of a library of multi-colored isomeric aryldibenzopyrylium halochromic cations
作者:Samantha M. Meyer、Eva M. Charlesworth-Seiler、Joel G. Patrow、Jonathan P. Kitzrow、Deidra L. Gerlach、Eric W. Reinheimer、Bart J. Dahl
DOI:10.1016/j.tet.2020.131222
日期:2020.6
This report describes the synthesis of five new colorful 6-aryldibenzo[b,d]pyrylium cation salts, a largely unexplored structural unit. These rare compounds are benzannulated structural derivatives of the well-known flavylium cations found widespread in natural pigments. These new dyes are directly compared to three previously synthesized 6-aryldibenzo[b,d]pyrylium cation salts as well as eight colorful
该报告描述了五种新的多彩的6-芳基二苯并[b,d]吡啶鎓阳离子盐的合成,这是一个主要未开发的结构单元。这些稀有化合物是在天然颜料中广泛发现的众所周知的黄酮阳离子的苯并环结构衍生物。将这些新染料直接与三种先前合成的6-芳基二苯并[b,d]吡啶鎓阳离子盐以及八种多彩异构的9-芳基二苯并[b,e]吡啶鎓阳离子或9-芳基x鎓盐进行比较。9-芳基黄蒽单元通常在生物学上重要的若丹明和罗莎明染料中发现,但该研究中提供的六种类似物先前未报道或未分离。根据所有化合物之间的结构差异,分析了全部16种化合物的视觉和光谱特性。