Results 11 to 20 of about 26,582 (202)
Marine Pyrrole Alkaloids [PDF]
Marine Drugs, 2021 Nitrogen heterocycles are essential parts of the chemical machinery of life and often reveal intriguing structures. They are not only widespread in terrestrial habitats but can also frequently be found as natural products in the marine environment.
Kevin Seipp, Leander Geske, Till Opatz
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Molecules, 2000 A stepwise synthesis of a-unsubstituted pyrroles with desired substituents in the b-positions of the ring has been devised.
O. A. Golubchicov +2 more
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Molecules, 2023 An efficient and direct approach to pyrroles was successfully developed by employing 3-formylchromones as decarboxylative coupling partners, and facilitated by microwave irradiation.
Xue Li +6 more
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Iridium-Catalyzed Silylation of Five-Membered Heteroarenes: High Sterically Derived Selectivity from a Pyridyl-Imidazoline Ligand. [PDF]
, 2020 The steric effects of substituents on five-membered rings are less pronounced than those on six-membered rings because of the difference in bond angles. Thus, the regioselectivities of reactions of five-membered heteroarenes that occur with selectivities
Hartwig, John F +3 more
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Technology for the production of disubstituted pyrroles [PDF]
E3S Web of Conferences, 2023 In this work, we studied the catalytic synthesis of pyrrole and their derivatives from ketoximes and acetylene in the liquid phase under normal conditions in the presence of homogeneous catalysts.
Safarov Megli Djumayevich
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Pyrrole-Pyridine and Pyrrole-Naphthyridine Hosts for Anion Recognition [PDF]
Molecules, 2015 The association constants of the complexes formed by two hosts containing pyrrole, amide and azine (pyridine and 1,8-naphthyridine) groups and six guests, all monoanions (Cl−, CH3CO2−, NO3−, H2PO4−, BF4−, PF6−), have been determined using NMR titrations.
M. García +7 more
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Журнал органічної та фармацевтичної хімії, 2020 Aim. To study the synthetic potential of cyclization of N-(β-polyfluoroacyl)vinyl derivatives of proline and N-substituted glycines into polyfluoroalkyl pyrroles, which are useful intermediates to fluorinated pyrrolidine alkaloids.
Anton A. Klipkov +3 more
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(E)-1-(3-Benzoyl-4-phenyl-1H-pyrrol-1-yl)-3-phenylprop-2-en-1-one
Molbank, 2022 Over the last decade, there has been an increasing effort to fight inflammatory conditions establishing new multitarget approaches. Chronic inflammation is implicated in many multifactorial diseases, constituting a great economic burden and a chronic ...
Viola Noti, Dimitra Hadjipavlou-Litina
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Formation of Bicyclic Pyrroles from the Catalytic Coupling Reaction of 2,5-disubstituted Pyrroles with Terminal Alkynes, Involving the Activation of Multiple C-H bonds [PDF]
, 2008 Substituted bicyclic pyrroles are produced directly from the coupling reaction of 2,5-disubstituted pyrroles with terminal alkynes, involving the activation of multiple C–H bonds and regioselective ...
Yi, Chase S., Zhang, Jie
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2-[(1H-Pyrrol-2-yl)methyl]-1H-pyrrole [PDF]
Acta Crystallographica Section E Structure Reports Online, 2013 In the title compound, C9H10N2, the two pyrrole ring planes are twisted by a dihedral angle of 69.07 (16)° and the C—C—C methane angle is 115.1 (2)°. In the crystal, molecules are connected into layers in thebcplane by N—H...π interactions.
Chong-Hyeak Kim +4 more
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