R
Roman A. Irgashev
Researcher at Russian Academy of Sciences
Publications - 96
Citations - 754
Roman A. Irgashev is an academic researcher from Russian Academy of Sciences. The author has contributed to research in topics: Trifluoromethyl & Indole test. The author has an hindex of 15, co-authored 91 publications receiving 660 citations. Previous affiliations of Roman A. Irgashev include Enamine Ltd & Ural State University.
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One-pot three-component reaction of 3-(polyfluoroacyl)chromones with active methylene compounds and ammonium acetate: regioselective synthesis of novel RF-containing nicotinic acid derivatives
TL;DR: In this article, the C-2 atom of the chromone system with pyrone ring-opening and subsequent cyclization to 5-salicyloyl-2-methyl-5-(polyfluoroalkyl)-5H-chromeno[4,3-b]pyridine-3-carbonitriles was investigated.
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A facile and convenient synthesis and photovoltaic characterization of novel thieno[2,3-b]indole dyes for dye-sensitized solar cells
Roman A. Irgashev,Roman A. Irgashev,Arseny A. Karmatsky,Arseny A. Karmatsky,Sergey Kozyukhin,Vladimir Ivanov,Alexey A. Sadovnikov,Vladimir V. Kozik,Vitaly A. Grinberg,V. V. Emets,Gennady L. Rusinov,Gennady L. Rusinov,Valery N. Charushin,Valery N. Charushin +13 more
TL;DR: In this paper, two novel dyes IK-1,2 bearing the 8-alkyl-8H-thieno[2,3-b ]indole unit as an electron-donating part of the push-pull system have been designed and prepared, as promising sensitizers for solar cells.
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3-(Polyhaloacyl)chromones and their Hetero Analogues: Synthesis and Reactions with Amines
TL;DR: 2-Hydroxy-2-(polyhaloalkyl)chroman-4-ones react with diethoxymethyl acetate at 140-150 °C for 15 minutes to give 3-(poly-haloacyl)chromones in good yields as discussed by the authors.
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Methyl 2-methoxytetrafluoropropionate as a synthetic equivalent of methyl trifluoropyruvate in the Claisen condensation. The first synthesis of 2-(trifluoroacetyl)chromones and 5-aryl-2-hydroxy-2-(trifluoromethyl)furan-3(2H)-ones
Roman A. Irgashev,Vyacheslav Ya. Sosnovskikh,Nataliya Kalinovich,Olesya Kazakova,Gerd-Volker Röschenthaler +4 more
TL;DR: In this article, 2-(Trifluoroacetyl)chromones and 5-aryl-2-hydroxy-2-(trifluoromethyl)furan-3(2H)-chromones were obtained via the Claisen condensation of acetophenones with methyl 2-methoxytetrafluoropropionate, followed by sulfuric acid-mediated deprotection of the reaction products.
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Construction of Heteroacenes with Fused Thiophene and Pyrrole Rings via the Fischer Indolization Reaction
Roman A. Irgashev,Roman A. Irgashev,Arseny A. Karmatsky,Arseny A. Karmatsky,Gennady L. Rusinov,Gennady L. Rusinov,Valery N. Charushin,Valery N. Charushin +7 more
TL;DR: The protocol suggested for preparing these N,S-heteroacenes is based on using easily available reagents, such as cinnamic acids and arylhydrazines, which can be involved in the Fischer indole synthesis, as the key step.