Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
CEISAM Lab-UMR 6230, CNRS, University of Nantes, Nantes, France.
Chem Commun (Camb). 2022 Feb 1;58(10):1542-1545. doi: 10.1039/d1cc06924a.
The lactone carbonyl group of coumarin derivatives has been shown to participate in intramolecular Knoevenagel condensations, enabling the unprecedented direct transformation of coumarins into rhodols. The resulting rhodols, possessing two ester groups, have very intense orange-red fluorescence.
香豆素衍生物中的内酯羰基被证明可以参与分子内的 Knoevenagel 缩合反应，从而实现了香豆素向洛红醇的前所未有的直接转化。所得的洛红醇具有两个酯基，呈现出非常鲜艳的橙红色荧光。
