Preparation of Substituted Phenanthridines from the Coupling of Aryldiazonium Salts with Nitriles: A Metal Free Approach
作者:Mani Ramanathan、Shiuh-Tzung Liu
DOI:10.1021/acs.joc.5b00579
日期:2015.5.15
A transition metal free approach for the synthesis of substituted phenanthridines from the coupling reaction of aryldiazonium tetrafluoroborates with nitriles has been developed. This operationally simple protocol proceeds through a substitution of aryldiazonium with nitriles followed by an intramolecular arylation to provide the corresponding phenanthridines in moderate to excellent yields.
Base‐Promoted Aerobic Oxidation/Homolytic Aromatic Substitution Cascade toward the Synthesis of Phenanthridines
作者:Debabrata Maiti、Atreyee Halder、Suman De Sarkar
DOI:10.1002/adsc.201900995
日期:2019.11.5
transition metal‐free synthesis of polysubstituted phenanthridines from abundant starting materials like benzhydrol and 2‐iodoaniline derivatives. The reaction involves sequential oxidation of alcohol and direct condensation reaction with the amine resulting in a C−N bond formation followed by a radical C−C coupling in a cascade sequence. The used base potassium tert‐butoxide plays a dual role in dehydrogenation
A photocatalyst-free method for the synthesis of 6-alkyl(aryl)phenanthridines under visible light irradiation
作者:Palani Natarajan、Partigya、Pooja
DOI:10.1039/d2nj04414e
日期:——
developed to synthesize a number of 6-alkyl(aryl)phenanthridines from isocyanobiaryls and alkyl(aryl)sulfinates in ethyl lactate under aerobic conditions. This protocol did not require a photoredox catalyst, and the reaction was sparked by the photochemical activity of an electron donor–acceptor complex formed by the interaction of isocyanobiaryls with alkyl(aryl)sulfinates. The environmental friendliness
已开发出一种新颖有效的蓝色 LED 诱导方法,可在有氧条件下从乳酸乙酯中的异氰基联芳基和烷基(芳基)亚磺酸盐合成许多 6-烷基(芳基)菲啶。该方案不需要光氧化还原催化剂,反应是由异氰基联芳基与烷基(芳基)亚磺酸盐相互作用形成的电子供体-受体复合物的光化学活性引发的。环境友好、温和、克级可合成性、不含有毒有机溶剂/添加剂以及不含过渡金属只是该方法的几个显着优势。
Palladium-Catalyzed Intramolecular C–H Activation/C–C Bond Formation: A Straightforward Synthesis of Phenanthridines
作者:Jinsong Peng、Tonghui Chen、Chunxia Chen、Bin Li
DOI:10.1021/jo2017108
日期:2011.11.18
The palladium-catalyzed intramolecular C-H activation/C-C cross-coupling has been developed for a straightforward and efficient synthesis of phenanthridines. With Pd(OAc)(2) (4 mol %) as the catalyst, PCy3 (8 mol %) as the ligand, and Cs2CO3 as the base, this protocol was applied to synthesize a small library of phenanthridine derivatives in good yields in THF.
Govindachari et al., Journal of the Chemical Society, 1958, p. 1715