Asymmetric meso-CF3-dipyrromethanes with amino- and heterocyclic functions from trifluoro(pyrrolyl)ethanols and pyrroles
摘要:
Asymmetric meso-CF3-dipyrromethanes with amino- and nitrogen heterocyclic functions, a new family of the BODIPY dye precursors, have been synthesized in 70-90 % yield by condensation of trifluoro(pyrrolyl)ethanols with pyrroles in the presence of AlCl3. This catalyst, for the first time, was shown to be more efficient than commonly used P2O5, which was entirely inactive in the condensation of pyrroles having basic substituents (amino group and pyrazole moiety).
[EN] BORON-CONTAINING CYCLIC EMISSIVE COMPOUNDS AND COLOR CONVERSION FILM CONTAINING THE SAME<br/>[FR] COMPOSÉS ÉMISSIFS CYCLIQUES CONTENANT DU BORE ET FILM DE CONVERSION DE COULEUR LES CONTENANT
申请人:NITTO DENKO CORP
公开号:WO2021146380A1
公开(公告)日:2021-07-22
The present disclosure relates to novel photoluminescent complex comprising a BODIPY moiety covalently bonded to a blue light absorbing moiety, and a color conversion film, a back-light unit using the same.
General Transition Metal-Free Synthesis of NH-Pyrroles from Secondary Alcohols and 2-Aminoalcohols
作者:Besir Krasniqi、Kayle Geerts、Wim Dehaen
DOI:10.1021/acs.joc.8b03215
日期:2019.5.3
A novel, transition metal-free and one-pot methodology to synthesize various substituted NH-pyrroles from readily available building blocks such as secondary alcohols and 2-aminoalcohols is described. The process is based on the venerable Oppenauer–Woodward oxidation, which uses benzophenone as an inexpensive reagent to achieve oxidation of secondary alcohols under mild condition to ketones, further
Expedient one-pot synthesis of pyrroles from ketones, hydroxylamine, and 1,2-dichloroethane
作者:Boris A. Trofimov、Al'bina I. Mikhaleva、Andrei V. Ivanov、Viktoria S. Shcherbakova、Igor' A. Ushakov
DOI:10.1016/j.tet.2014.11.031
日期:2015.1
2- and 2,3-Substituted pyrroles are readily synthesized in a one-pot procedure from ketones, hydroxylamine hydrochloride, and 1,2-dichloroethane in the KOH/DMSO system (120 °C, 2–4 h), the yields of pyrroles ranging 11–85%. Aliphatic, cycloaliphatic, aromatic, and heteroaromatic ketones tolerate the reaction conditions.
2- and 3-Monohalogenated BODIPY Dyes and Their Functionalized Analogues: Synthesis and Spectroscopy
作者:Volker Leen、Tom Leemans、Noël Boens、Wim Dehaen
DOI:10.1002/ejoc.201100324
日期:2011.8
Starting from appropriately halogenated acylpyrroles, a wide range of reactive 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) derivatives can be obtained. The fluorescent dyes display excellent reactivity in nucleophilic aromatic substitution, transition-metal-catalyzed cross-coupling and copper-catalyzed cycloaddition to azides (click chemistry). The spectral properties of the starting and final