Acta Crystallographica Section E: Crystallographic Communications, 2019 In the title compounds, C32H25ClN2O4 (I) and C33H28N2O5 (II), the six-membered pyran and piperidine rings adopt envelope and chair conformations, respectively. The five-membered pyrrolidine rings adopt twist conformations. Compound (II) crystallizes with
S. Syed Abuthahir +4 more
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Molecules, 2023 The synthesis of dicyclic spiropyridazine oxoindole derivatives by using [3+3]-cycloaddition of N-unsubstituted isatin N,N′-cyclic azomethine imine 1,3-dipoles was reported.
Guosheng Yang +9 more
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Cycloadditions to 1,1‐Dicyclopropylethylene [PDF]
Angewandte Chemie International Edition in English, 1969 While the stabilization of cationic centers by alpha cyclopropyl groups has been verified in many instances [2,31, to the best of our knowledge nothing is known about the influenceof cyclopropyl groups, as substituents, on the reaction mechanism of multiple bonds. The α-cyclopropylcarbonium ions 141 that may be formed are capable of rearrangement, thus
Effenberger, Franz, Podszun, Wolfgang
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Dearomative, aminocatalytic normal-electron-demand aza-Diels-Alder cycloaddition in the synthesis of tetrahydrofuropyridines [PDF]
, 2023 In the manuscript the application of dearomative normal-electron-demand aza-Diels-Alder cycloaddition in the synthesis of tetrahydrofuropyridines is described. The developed approach utilizes aminocatalytic activation of 2-alkyl-3-furfurals that proceeds
Artur, Przydacz +2 more
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Crystal structure of the 4 + 2 cycloadduct of photooxidized anthracene and C60 fullerene
Acta Crystallographica Section E, 2014 The structure of the title compound, 5,6-[(1R,10S)-2,9-dioxatricyclo[8.6.03,8.011,16]hexadecane-1,10-diyl]-(C60–Ih)[5,6]fullerene methanedithione 0.1-solvate, C74H10O2·0.1CS2, has tetragonal (P42/n) symmetry at 100 K. It has a unique eight-membered ring,
Gábor Bortel +3 more
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New catalytic strategies for DNA and RNA alkylation using rhodium (II) and copper (I) carbenes - a versatile tool for applications in chemical biology [PDF]
, 2015 A variety of nucleic acid substrates were catalytically alkylated with rhodium(II) and copper(I)-carbenoids generated from diazocarbonyl compounds. The alkylation took place via an N-H insertion reaction selectively targeting the nucleobases in single ...
Tishinov, Kiril
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Organocatalyzed Enantio- and Diastereoselective Domino [3+2]-Dipolar Cycloaddition: Synthesis of Chiral Pyrrorlo-thiazine-2-carbaldehydes and Dihydropyrrole-3-carbaldehydes [PDF]
, 2023 1,3-Dipolar cycloaddition of azomethine ylide and dipolarophile is an efficient method to construct N, S heterocycles such as thiazoles, 1,4-thiazines, and their chiral polyhydro derivatives.
Venkata Surya Kumar , Choutipalli +3 more
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ReactionsThe cycloaddition reaction is one of the most common reactions in organic chemistry. It has been applied in various fields. Herein, we focus on the application of cycloaddition reactions in investigating biological molecules and materials using magnetic ...
Amarendra Nath Maity +2 more
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A Novel Ultra-High Swelling Organogel: An Epoxy Resin Derived Gelator for Alcohols and Polar Organic Liquids [PDF]
علوم و تکنولوژی پلیمر, 2020 Hypothesis: Organogels are hydrophobic macromolecular networks with ability to absorb and retain organic solvents. They have been used in various applications, e.g., production of disinfectant hygienic gels used in medicine and public health. The present
Zeinab Karami +1 more
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Heterocyclic syntheses involving cycloaddition reactions
, 2021 Heterocyclic syntheses involving cycloaddition ...
Khamis F. Shuhaibar (11170513)
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