A new method for the synthesis of 9-unsubstituted acridines from acridones using mild conditions is described. Various acridines bearing reduction-sensitive group(s) have been synthesized from the corresponding acridones using a two-step procedure that involved a commercially available borane complex reduction followed by an acridane oxidation. (C) 2009 Elsevier Ltd. All rights reserved.
Effects of the Distance between Radical Sites on the Reactivities of Aromatic Biradicals
作者:Duanchen Ding、Hanning Jiang、Xin Ma、John J. Nash、Hilkka I. Kenttämaa
DOI:10.1021/acs.joc.0c00658
日期:2020.7.2
separated further than that does no coupling occur. The most reactive radical site of each biradical was experimentally determined to be the one predicted to be more reactive based on the monoradical reactivity data. Therefore, the calculated vertical electron affinities of relevant monoradicals can be used to predict which radical site is most reactive in the biradicals.
Photofunctional Scope of Fluorescent Dithienylethene Conjugates with Aza‐Heteroaromatic Cations
作者:Jialei Chen‐Wu、David B. Guzmán‐Ríos、Patricia Remón、José A. González‐Delgado、Antonio J. Martínez‐Martínez、Francisco Nájera、Jesús F. Arteaga、Uwe Pischel
DOI:10.1002/adma.202300536
日期:2023.7
moieties is synthesized. The switches are characterized regarding their photochemical and photophysical properties in acetonitrile and in water. The efficiency of the switching and the photostationary state composition depend on the degree of π-conjugation of the heteroaromatic systems. Thus, DTEs with acridinium-derived moieties have very low quantum yields for the ring-closing process, which is in contrast