Synthesis and spectral properties of fluorescent photochromic diarylethenes with 6,6a-dihydropentalene-2(1H)-one ethene “bridge”
作者:Dmitry V. Lonshakov、Valerii Z. Shirinian、Igor V. Zavarzin、Andrey G. Lvov、Mikhail M. Krayushkin
DOI:10.1016/j.dyepig.2014.04.040
日期:2014.10
spectral properties of the compounds obtained have been studied, and it was found that pentalenone derivatives as well as starting cyclopentenones, exhibit photochromic properties; in addition, the former, unlike the latter, are also fluorescent.
制备6,6a-二氢戊二烯-2(1 H)-one衍生物的另一种合成策略,包括区域选择性α阶段已经提出了环戊烯酮体系的溴化。该方法连同溴化过程包括将4-芳基-3-氧代丁酸乙酯与溴代环戊烯酮进行烷基化和烷基化产物的分子内碳环化反应。对环化反应进行了详细的研究,发现主产物和副产物的产率强烈依赖于碱浓度,该方法还可用于设计8,8a-dihydrocyclopenta [a] inden-2(1H) -一个单位。研究了所得化合物的光谱性质,发现五烯酮衍生物以及起始的环戊烯酮均表现出光致变色性质。另外,与后者不同,前者也是荧光的。