Results 21 to 30 of about 18,004 (163)
Electrochemical Generation of a Nonstabilized Azomethine Ylide: Access to Substituted NHeterocycles
, 2021 Azomethine ylides are fascinating 1,3-dipoles for [3 + 2] cycloaddition reactions toward the construction of N-heterocycles. Herein, an efficient and environmentally benign electrochemical approach for the generation of a nonstabilized azomethine ylide ...
Rakesh Kumar +3 more
core +1 more source
2′-Methyl-2′-nitro-1′-phenyl-2′,3′,5′,6′,7′,7a'-hexahydrospiro[indoline-3,3′-1′H-pyrrolizin]-2-one
Acta Crystallographica Section E, 2008 The title compound, C21H21N3O3, was synthesized by a multi-component 1,3-dipolar cycloaddition of azomethine ylide, derived from isatin and proline by a decarboxylative route, and (E)-1-phenyl-2-nitropropene.
Yaghoub Sarrafi, Kamal Alimohammadi
doaj +1 more source
Shedding Light on the Chemistry and the Properties of Münchnone Functionalized Graphene
Nanomaterials, 2021 Münchnones are mesoionic oxazolium 5-oxides with azomethine ylide characteristics that provide pyrrole derivatives by a 1,3-dipolar cycloaddition (1,3-DC) reaction with acetylenic dipolarophiles. Their reactivity was widely exploited for the synthesis of
Giulia Neri +6 more
doaj +1 more source
, 2016 Synthesis of 2-Azatricyclo[5.2.1.04,10]decanes and 2,5-Diazatricyclo[5.2.1.04,10]decanes by Intramolecular Azomethine Ylide ...
Larry E. Overman (1264596) +1 more
core +2 more sources
Molecules, 2017 For the first time, arylmethylidene cyclohexanones that are non-symmetrical due to the presence of peripheral substituents were studied in 1,3-dipolar cycloaddition reactions.
Alexander Anis’kov +3 more
doaj +1 more source
Synthesis and Biological Evaluation of S-, O- and Se-Containing Dispirooxindoles
Molecules, 2021 A series of novel S-, O- and Se-containing dispirooxindole derivatives has been synthesized using 1,3-dipolar cycloaddition reaction of azomethine ylide generated from isatines and sarcosine at the double C=C bond of 5-indolidene-2-chalcogen-imidazolones
Maksim Kukushkin +10 more
doaj +1 more source
Synthesis of spiropyrrolizidines containing quinoxaline and pyrrole fragments [PDF]
Известия Саратовского университета. Новая серия: Серия Химия. Биология. Экология, 2023 The reaction of 1,3-dipolar cycloaddition azomethine ylides obtained by the in situ interaction of 11H-indeno[1,2-b]quinoxalin-11-one and proline, and 3-phenyl-1-pyrrolyl-2-en-1-ones has been used for the synthesis of substituted spiropyrrolizidines in ...
Borisova, Svetlana Vasilievna +2 more
doaj +1 more source
General Approach toward Aspidospermatan-Type Alkaloids Using One-Pot Vilsmeier–Haack Cyclization and Azomethine Ylide Cycloaddition [PDF]
, 2017 : The development of a new one-pot reaction sequence afforded the tricyclic core of several aspidospermatan-type alkaloids from a linear, densely functionalized substrate.
Guillaume Bélanger +3 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2016 The one-pot [3 + 2] cycloaddition of an azomethine ylide with a maleimide followed by another [3 + 2] cycloaddition of an azide with the second maleimide gives a 1,5-diamino intermediate which is used for a sequential aminomethylation reaction with ...
Xiaofeng Zhang +6 more
doaj +1 more source
Molecules, 2023 A new series of spirooxindoles based on benzimidazole, triazole, and isatin moieties were synthesized via a [3+2] cycloaddition reaction protocol in one step. The single X-ray crystal structure of the intermediate triazole-benzimidazole 4 was solved. The
Saeed Alshahrani +7 more
doaj +1 more source