Results 1 to 10 of about 1,085 (145)
Selective C‐7 Functionalization of Phenanthridines by Microwave‐Assisted Claisen Rearrangements of 8‐Allyloxyphenanthridines [PDF]
ChemistryOpen, 2023 Carbon‐carbon bond formation in the phenanthridine 7‐position was achieved by microwave‐assisted Claisen rearrangement of 8‐allyloxyphenanthridines. The reactions took place with excellent regioselectivity and high chemical yields.
Mathias Ryslett Lepsøe +2 more
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Synthesis of phenanthridines via a novel photochemically-mediated cyclization and application to the synthesis of triphaeridine [PDF]
Beilstein Journal of Organic Chemistry, 2021 Readily synthesized biphenyl-2-carbaldehyde O-acetyl oximes were exposed to UV radiation affording phenanthridines. The scope and limitations of this novel reaction were explored.
Songeziwe Ntsimango +3 more
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Direct Photoexcitation of Benzothiazolines: Acyl Radical Generation and Application to Access Heterocycles [PDF]
Molecules, 2021 An acyl radical generation and functionalization strategy through direct photoexcitation of benzothiazolines has been developed. The formed acyl radical species can either be trapped by quinoxalin-2-ones to realize their C(3)-H functionalization or ...
Xiang-Kui He +4 more
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Pentacyclic aromatic heterocycles from Pd-catalyzed annulation of 1,5-diaryl-1,2,3-triazoles [PDF]
Beilstein Journal of Organic ChemistryA series of pentacyclic aromatic heterocycles representing functionalized phenanthridines, naphthyridines, and phenanthrolines were prepared via Pd-catalyzed annulation of 1,5-diaryl-1,2,3-triazoles.
Kaylen D. Lathrum +3 more
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Molecules, 2018 In this study, we report the synthesis, antibacterial and anticancer evaluation of 38 novel phenanthridines that were designed as analogs of the benzo[c]phenanthridine alkaloids. The prepared phenanthridines differ from the benzo[c]phenanthridines in the
Kamil Motyka +2 more
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Photocatalyzed syntheses of phenanthrenes and their aza-analogues. A review [PDF]
Beilstein Journal of Organic Chemistry, 2020 Phenanthrenes and their aza-analogues have important applications in materials science and in medicine. Aim of this review is to collect recent reports describing their synthesis, which make use of radical cyclizations promoted by a visible light ...
Alessandra Del Tito +4 more
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Metal-Free Photoredox Catalyzed Cyclization of O-(2,4-Dinitrophenyl)oximes to Phenanthridines
Molecules, 2016 A metal-free visible-light photoredox-catalyzed intermolecular cyclization reaction of O-2,4-dinitrophenyl oximes to phenanthridines was developed. In this study, the organic dye eosin Y and i-Pr2NEt were used as photocatalyst and terminal reductant ...
Zhixing Qing, Pi Cheng, Jianguo Zeng
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Microwave assisted synthesis of phenanthridine derivatives via Suzuki coupling and condensation
Results in Chemistry, 2021 One-pot synthesis of phenanthridine derivatives using appropriately substituted aromatic ortho-bromo N-tosylhydrazones and 2′-aminobenzeneboronic acid pinacol esters is described.
Satheesh Kumar Dende +3 more
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Molecules, 2021 Developing an efficient catalytic system using molecular oxygen as the oxidant for rhodium-catalyzed cross-dehydrogenative coupling remains highly desirable.
Weihui Zhuang +3 more
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Berichte der deutschen chemischen Gesellschaft, 1889 n ...
Pictet, Amé, Ankersmit, H. J.
openaire +3 more sources