Helquats as Promoters of the Povarov Reaction: Synthesis of 1,2,3,4-Tetrahydroquinoline Scaffolds Catalyzed by Helicene-Viologen Hybrids.
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DOI: 10.1002/cplu.202000151
Abstract: Helquats (HQs) are structurally linked to helicenes and viologens, and they represent an attractive field of research in chemistry and medicinal chemistry. In the present work they were used as catalysts for the synthesis of… read more here.
Keywords: helquats promoters; promoters povarov; chemistry; synthesis ... See more keywords
Three-Component Povarov Reaction with Alcohols as Alkene Precursors: Efficient Access to 2-Arylquinolines
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DOI: 10.1002/ejoc.201601343
Abstract: An atom-economic and efficient approach to the synthesis of 2-arylquinolines has been developed. The protocol involves an iron-catalysed cascade N-alkylation/aerobic oxidation/Povarov reaction, and the desired quinolines were prepared in moderate to excellent yields from readily… read more here.
Keywords: component povarov; povarov; etoh nproh; three component ... See more keywords
Photocatalytic Synthesis of Quinolines via Povarov Reaction under Oxidant-Free Conditions.
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DOI: 10.1021/acs.orglett.1c04287
Abstract: We describe here an approach for synthesizing quinolines either from N-alkyl anilines or from anilines and aldehydes. A dual-catalyst system consisting of a photocatalyst and a proton reduction cocatalyst is employed. Without the use of… read more here.
Keywords: photocatalytic synthesis; povarov reaction; via povarov; quinolines via ... See more keywords
4-(Aryl)-Benzo[4,5]imidazo[1,2-a]pyrimidine-3-Carbonitrile-Based Fluorophores: Povarov Reaction-Based Synthesis, Photophysical Studies, and DFT Calculations
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DOI: 10.3390/molecules27228029
Abstract: A series of novel 4-(aryl)-benzo[4,5]imidazo[1,2-a]pyrimidine-3-carbonitriles were obtained through the Povarov (aza-Diels–Alder) and oxidation reactions, starting from benzimidazole-2-arylimines. Based on the literature data and X-ray diffraction analysis, it was discovered that during the Povarov reaction, [1,3]… read more here.
Keywords: povarov reaction; spectroscopy; aryl benzo; benzo imidazo ... See more keywords