Results 71 to 80 of about 17,027 (206)
Scientific Reports, 2023 Pyrroles are widely spread worldwide because of their critical applications, especially pharmacology. An expedition method for one-pot synthesis of N-substituted pyrrole derivatives has been presented by a reaction between 2,5-dimethoxytetrahydrofuran ...
Setareh Mousavi +3 more
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Development of Novel Pyrrole Derivatives and Their Cinnamic Hybrids as Dual COX-2/LOX Inhibitors
Molecules, 2023 Molecular hybridization has emerged as a promising approach in the treatment of diseases exhibiting multifactorial etiology. With regard to this, dual cyclooxygenase-2/lipoxygenase (COX-2/LOX) inhibitors could be considered a safe alternative to ...
Viola Noti +2 more
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Selective synthesis of functionalized pyrroles from 3-aza-1,5-enynes [PDF]
, 2016 2-Trifluoromethyl-5-(arylsulfonyl)methyl pyrroles and 2-trifluoromethyl-4-(arylsulfonyl) methyl pyrroles were selectively synthesized from trifluoromethyl-substituted 3-aza-1,5-enynes via a cyclization/sulfonyl group migration cascade catalyzed by ...
Wan, Boshun +5 more
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Rhodium-Catalyzed Conversion of Furans to Highly Functionalized Pyrroles [PDF]
, 2016 The synthesis of highly functionalized pyrroles has been achieved by reaction of rhodium-stabilized imino-carbenes with furans. The reaction features an initial [3+2] annulation to form bicyclic hemiaminals, followed by ring opening to generate ...
Samantha A. Green (1977208) +2 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2015 The synthesis of N-arylated pyrroles and indoles is documented, as well as their functionalization by deprotonative metallation using the base in situ prepared from LiTMP and ZnCl2·TMEDA (1/3 equiv).
Mohamed Yacine Ameur Messaoud +12 more
doaj +1 more source
Carbohydrate-auxiliary assisted preparation of enantiopure 1,2-oxazine derivatives and aminopolyols
Beilstein Journal of Organic Chemistry, 2012 An approach to enantiopure hydroxylated 2H-1,2-oxazine derivatives is presented utilizing the [3 + 3] cyclisation of lithiated alkoxyallenes and an L-erythrose-derived N-glycosyl nitrone as precursors.
Marcin Jasiński +2 more
doaj +1 more source
Photofragment slice imaging studies of pyrrole and the Xe⋯pyrrole cluster [PDF]
The Journal of Chemical Physics, 2007 The photolysis of pyrrole has been studied in a molecular beam at wavelengths of 250, 240, and 193.3nm, using two different carrier gases, He and Xe. A broad bimodal distribution of H-atom fragment velocities has been observed at all wavelengths. Near threshold at both 240 and 250nm, sharp features have been observed in the fast part of the H-atom ...
Rubio-Lago, L +12 more
openaire +3 more sources
An efficient and facile access to highly functionalized pyrrole derivatives
Beilstein Journal of Organic Chemistry, 2018 A straightforward and one-pot synthesis of pyrrolo[3,4-c]pyrrole-1,3-diones via Ag(I)-catalyzed 1,3-dipolar cycloaddition of azomethine ylides with N-alkyl maleimide, followed by readily complete oxidation with DDQ, has been successfully developed ...
Meng Gao +5 more
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Gold(I)-Catalyzed Intra- and Intermolecular Alkenylations of beta-Yne-pyrroles: Facile Formation of Fused Cycloheptapyrroles and Functionalized Pyrroles [PDF]
, 2014 An efficient gold(I)-catalyzed alkenylation of beta-alkyne-substituted pyrroles is reported. The intramolecular reaction gives straightforward access to different types of seven-membered-ring-fused pyrroles with endo-selectivity, and the intermolecular ...
Wu, Fan +5 more
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Beilstein Journal of Organic Chemistry, 2020 N-(Hetero)aryl-4,5-unsubstituted pyrroles were synthesized from (hetero)arylamines, 1,3-dicarbonyl compounds, and α-bromoacetaldehyde acetal by using aluminum(III) chloride as a Lewis acid catalyst through [1 + 2 + 2] annulation.
Wenbo Huang +5 more
doaj +1 more source