Dimethyl sulfoxide-aided copper(0)-catalyzed intramolecular decarbonylative rearrangement of N-aryl isatins leading to acridones
作者:Hao Wu、Nana Ma、Mengxiao Song、Guisheng Zhang
DOI:10.1016/j.cclet.2019.10.043
日期:2020.6
Abstract Described here is the first example of Cu(0)-catalyzed intramolecular decarbonylative rearrangements of readily available N-aryl isatins assisted by solvent dimethyl sulfoxide (DMSO) under air atmosphere and additive-free conditions leading to various biologically important acridones in good to excellent yields. This novel transformation is proposed to go through a sequential DMSO-aided Cu
The reaction of o-aminoacetophenones and arylboronic acids catalyzed by copper(II) salts in the presence of pyridine under an O2 atmosphere provides a general and efficient one-pot preparation of biologically interesting acridones. This relay reaction comprises an intermolecular Suzuki cross-coupling, intramolecular oxidative C(sp3)–H amination, and C(sp2)–H activation with simultaneous rearrangement
Reactions of π-Deficient Aromatic Heterocycles with Ammonium Polyhalides I. Halogenation of Acridone and Acridine Derivatives Using Benzyltriethylammonium (BTEA) Polyhalides
作者:Mircea Vlassa、Ioan A. Silberg、Radu Custelceanu、Monica Culea
DOI:10.1080/00397919508013873
日期:1995.11
Abstract The reactions of acridine and acridone with benzyltriethyl-ammonium polyhalides in various solvents, under mild conditions, gave mono- and dihalogenated acridine and acridone derivatives and acridine complexes in good yields.
and environmental-friendly method for the construction of acridone derivatives with isatins and arynes was described. The isatins underwent a ring expansion process oxidized by O2 in the air and a broad scope of acridones in moderate to good yields were obtained. Baeyer-Villiger-type oxidation and intermolecular-nucleophilic addition were included, and no extra oxidant except O2 was needed.
描述了一种用靛红和芳烃构建吖啶酮衍生物的简单且环保的方法。靛红经历了被空气中的 O 2氧化的扩环过程,并以中等至良好的产率获得了广泛的吖啶酮。包括Baeyer-Villiger型氧化和分子间亲核加成,除O 2外不需要额外的氧化剂。
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