Nitrogen–Iodine Exchange of Diaryliodonium Salts: Access to Acridine and Carbazole
摘要:
A nitrogen iodine exchange protocol of diaryliodonium salts with sodium azide salt is developed for general construction of significant functional acridines and carbazoles, in which introduction of nitrogen at a late stage was successfully established avoiding heteroatom incompatibility. Inorganic sodium azide served as the sole nitrogen atom source in this transformation. The diversiform functional acridines and carbazoles were comprehensively achieved through annulated diaryliodonium salts, respectively. Notably, Acridine orange (a fluorescent indicator for cell lysosomal dye) and Carprofen (a non steroidal anti-inflammatory drug) were efficiently established through this protocol.
Facile Synthesis of Unsymmetrical Acridines and Phenazines by a Rh(III)-Catalyzed Amination/Cyclization/Aromatization Cascade
作者:Yajing Lian、Joshua R. Hummel、Robert G. Bergman、Jonathan A. Ellman
DOI:10.1021/ja406131a
日期:2013.8.28
annulations of aromatic azides with aromatic imines and azobenzenes to give acridines and phenazines, respectively. These transformations proceed through a cascade process of Rh(III)-catalyzed amination followed by intramolecular electrophilic aromatic substitution and aromatization. Acridines can be directly prepared from aromatic aldehydes by in situ imineformation using catalytic benzylamine.
Rh(<scp>iii</scp>)-Catalyzed bilateral cyclization of aldehydes with nitrosos toward unsymmetrical acridines proceeding with C–H functionalization enabled by a transient directing group
作者:Weiming Hu、Qingheng Zheng、Song Sun、Jiang Cheng
DOI:10.1039/c7cc03006a
日期:——
A Rh(III)-catalyzed bilateral cyclization was developed for the efficient construction of acridines proceeding with C–H functionalization whereby in situ formation and removal of an imino transient directing group in the presence of catalytic amount of BnNH2 are achieved. In this transformation, a sequential Rh(III)-catalyzed C–H amination, cyclization, and aromatization process was involved.
Facile Synthesis of Acridine Derivatives by ZnCl<sub>2</sub>-Promoted Intramolecular Cyclization of <i>o</i>-Arylaminophenyl Schiff Bases
作者:Qing Su、Pei Li、Mina He、Qiaolin Wu、Ling Ye、Ying Mu
DOI:10.1021/ol402732n
日期:2014.1.3
A concise and efficient method for the synthesis of a wide range of acridine derivatives and polycyclic aza-aromatic compounds from a ZnCl2-promoted cyclization reaction of readily available o-arylaminophenyl Schiff base compounds under convenient conditions was developed. Reaction conditions and scope of the new method were examined in detail.
Facile synthesis of acridines via Pd(0)-diphosphine complex-catalyzed tandem coupling/cyclization protocol
作者:Ting-Jun Wang、Wen-Wen Chen、Yi Li、Ming-Hua Xu
DOI:10.1039/c5ob00755k
日期:——
A facile and efficient approach for the synthesis of a variety of acridines via the tandemcoupling/cyclization of substituted 2-bromobenzaldehydes and anilines is described. The reaction can be accomplished with ease in the presence of a catalytic amount of Pd2(dba)3 and diphosphine ligand dppf, providing a broad range of substituted acridines in good to excellent yields (up to 99%). The Lewis acid