Pentacyclic coumarin-based blue emitters - the case of bifunctional nucleophilic behavior of amidines

被引：38

作者：

Poronik, Yevgen M. ^{[1
]}

Gryko, Daniel T. ^{[1
]}

机构：

[1] Inst Organ Chem PAS, PL-01224 Warsaw, Poland

来源：

CHEMICAL COMMUNICATIONS | 2014年 / 50卷 / 43期

关键词：

FLUORESCENT DYES; DBU; DERIVATIVES; CHEMISTRY; KETONES; ACIDS; UNITS;

D O I：

10.1039/c4cc01106f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An unexpected discovery of the novel cyclocondensation reaction of 1,8-diazabicyclo[5.4.0] undec-8-ene (DBU) and 1,5-diazabicyclo-[4.3.0] non-5-ene (DBN) with alkyl coumarin-3-carboxylates is described. First, an unknown skeleton is generated through the concomitant formation of new nitrogen-carbon and carbon-carbon bonds followed by the oxidation of the intermediate product by the second equivalent of the starting coumarin. Pentacyclic DBN-derivatives exhibit strong fluorescence both in solutions (Phi(fl) similar to 0.6-0.8) and in the solid state, while non-planar DBU-derivatives exhibit strong fluorescence in the solid state only.

引用

收藏

页码：5688 / 5690

页数：3

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