A practical synthesis of substituted benzo[c]cinnoline- N,N′-dioxides and N-oxides.
摘要:
A practical synthesis of variously substituted benzo[c]cinnoline-NN'-dioxides and N-oxides is described, based on the reduction of the appropriate o,o'-dinitrobiphenyl compound with KOH in refluxing 2-propanol.
Applicability Aspects of Transition Metal-Catalyzed Aromatic Amination Protocols in Medicinal Chemistry
作者:Stefan Tasler、Jan Mies、Martin Lang
DOI:10.1002/adsc.200700133
日期:2007.10.8
The application of palladium- and copper-catalyzed reactions for the aromaticamination of pharmacologically relevant scaffolds is investigated. The focus is set on the scope of several protocols for the introduction of amines of broad structural diversity, allowing for the synthesis of numerous derivatives of one biological hit structure for screening in biological assay systems. Thus, attaining optimized
Synthesis of Biaryls by Pd-Catalyzed Decarboxylative Homo- and Heterocoupling of Substituted Benzoic Acids
作者:Kai Xie、Sizhuo Wang、Zhiyong Yang、Jidan Liu、Anwei Wang、Xiujian Li、Ze Tan、Can-Cheng Guo、Wei Deng
DOI:10.1002/ejoc.201100913
日期:2011.10
base, symmetrical and unsymmetrical biaryls can be readily synthesized through the Pd-catalyzed decarboxylative homo- and heterocoupling of substituted benzoic acids. The reaction gave the desired products in 40–90 % yield and is compatible with 2-nitro-, 2-methoxy-, 2-fluoro-, and 2-chloro-substituted benzoic acids.
The reaction of simple aromatic nitro-compounds with transition-metal oxalates: the question of nitrene intermediates
作者:R. A. Abramovitch、B. A. Davis
DOI:10.1039/j39680000119
日期:——
nitrobenzene derivatives with transition-metaloxalates, but not in their absence. Traces of primary amines were isolated occasionally. The formation of the azo- and azoxy-benzenes was shown to be an intermolecular process. It is suggested that the results are best explained in terms of a nitreneintermediate bound to the surface of the metal derivative. The reaction of some nitrosobenzene derivatives
and Sc3N@Ih-C80 have been disclosed. In the case of C60, a dearomative cascade reaction results in the formation of azafulleroids fused with a 7-6-5-membered ring system, whereas Sc3N@Ih-C80 undergoes a C−H insertion pathway, with the generation of carbazole-derived [6,6]- and [5,6]-azametallofulleroids and an unusual 1,2,3,6-tetrahydropyrrolo[3,2-c]carbazole-derived metallofullerene.
已经公开了2,2'-二叠氮联苯对C 60和Sc 3 N@ I h -C 80的不同反应性。就 C 60而言,脱芳香级联反应导致形成与 7-6-5 元环系统融合的氮杂富勒烯,而 Sc 3 N@ I h -C 80则经历 CH 插入途径,其中生成咔唑衍生的[6,6]-和[5,6]-氮杂金属富勒烯以及不寻常的1,2,3,6-四氢吡咯并[3,2- c ]咔唑衍生的金属富勒烯。
Borsche; Scholten, Chemische Berichte, 1917, vol. 50, p. 608