The chemistry of 2<i>H</i>-3,1-benzoxazine-2,4(1<i>H</i>)dione (isatoic anhydrides) 1. The synthesis of<i>N</i>-substituted 2<i>H</i>-3,1-benzoxazine-2,4(1<i>H</i>)diones
作者:Goetz E. Hardtmann、Gabor Koletar、Oskar R. Pfister
DOI:10.1002/jhet.5570120325
日期:1975.6
Three methods for the preparation of N-substituted 2H-3,1-benzoxazine-2,4(1H)diones (isatoicanhydrides) (1) utilizing 2-chloro-, 2-nitrobenzoic acids and N-unsubstituted isatoicanhydrides as starting materials, are described.
三种制备N-取代的2 H -3,1-苯并恶嗪-2,4(1 H)二酮(乙酸酐)的方法(1)使用2-氯-,2-硝基苯甲酸和N-未取代的等角酸酐作为制备方法描述了起始材料。
COPPOLA G. M.; HARDTMANN G. E., J. HETEROCYCL. CHEM., 1979, 16, NO 8, 1605-1610
作者:COPPOLA G. M.、 HARDTMANN G. E.
DOI:——
日期:——
Fluorescent 1-hydroxy-10-alkylacridin-9(10H)-one BF2-chelates: Large Stokes shift and long emission decay times
作者:Andreas Russegger、Sergey M. Borisov
DOI:10.1016/j.dyepig.2020.108816
日期:2021.1
New 1-hydroxy-10-alkylacridin-9(10H)-one BF2-chelates absorb in the blue-green part of the electromagnetic spectrum and emit fluorescence with moderate quantum yields of 8–45% in toluene. The dyes show large Stokes shifts about 4300 cm−1, decay times between 5 ns and 15 ns in toluene and high photostabilities. Introduction of a fluorine atom into the acridone cycle results in an increase of the fluorescence
新的1-羟基-10-烷基ac啶9-9 (10 H)-1 BF 2螯合物在电磁光谱的蓝绿色部分吸收并发出荧光,在甲苯中的荧光量子产率为8–45%。染料在甲苯中显示出大的斯托克斯位移,约为4300 cm -1,衰减时间在5 ns到15 ns之间,并且具有高光稳定性。将氟原子引入a啶酮循环会导致荧光量子产率和衰减时间的增加,而固定在刚性聚合物基质(聚苯乙烯)中的寿命则进一步延长至18 ns。较大的斯托克斯位移和长的发射衰减时间使该染料类成为时间分辨成像和传感应用的有趣平台。