College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China.
Chem Commun (Camb). 2019 Sep 17;55(75):11203-11206. doi: 10.1039/c9cc05178c.
A rhodium-catalyzed cascade reaction of benzoic acids with 1,4,2-dioxazol-5-ones was studied. The carboxyl group enabled a double C-H amidation followed by further intramolecular cyclization to afford 2,5-substituted benzoxazinones, which exhibited aggregation-induced emission (AIE) properties with a promising excited-state intramolecular proton-transfer (ESIPT) phenomenon.
研究了铑催化的苯甲酸与 1,4,2-二恶唑-5-酮的级联反应。羧基基团能够进行双重 C-H 酰胺化，然后进一步进行分子内环化，得到 2,5-取代的苯并恶嗪酮，它们具有聚集诱导发射（AIE）性质，并表现出有前途的激发态分子内质子转移（ESIPT）现象。
