Results 61 to 70 of about 13,198 (167)

Aziridination of a Single Carbon Atom in Alkenes via Energy Transfer Catalysis

Angewandte Chemie International Edition, Volume 65, Issue 26, 22 June 2026.
Contrary to traditional alkene aziridination via (formal) nitrene transfer, we herein report a strategy that achieves intermolecular aziridination of a single alkene carbon atom and installs an additional group at the other. Enabled by metal‐free energy transfer (EnT) catalysis, alkenyl boronates and silanes are transformed into reactive intermediates ...
Fritz Paulus, Corinna Heusel, Felix H. Wessels, Bünyamin Sikora, Maik G. Niedziella, Kilian van der Beck, Constantin G. Daniliuc, Frank Glorius   +7 more
wiley   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Easy Access to Water-Soluble Fullerene Derivatives via 1,3-Dipolar Cycloadditions of Azomethine Ylides to C₆₀

, 2016
Easy Access to Water-Soluble Fullerene Derivatives via 1,3-Dipolar Cycloadditions of Azomethine Ylides to ...
Maurizio Prato (444708), Fabiola Novello (3039078), Tatiana Da Ros (1694941), Michele Maggini (1611208), Elena Banfi (3039081)   +4 more
core   +1 more source

An effective one-pot access to polynuclear dispiroheterocyclic structures comprising pyrrolidinyloxindole and imidazothiazolotriazine moieties via a 1,3-dipolar cycloaddition strategy

Beilstein Journal of Organic Chemistry, 2016
An effective and highly regio- and diastereoselective one-pot method for the synthesis of new polynuclear dispiroheterocyclic systems with five stereogenic centers (dispiro[imidazo[4,5-e]thiazolo[3,2-b]-1,2,4-triazine-6,3′-pyrrolidine-2′,3′′-indoles ...
Alexei N. Izmest’ev, Galina A. Gazieva, Natalya V. Sigay, Sergei A. Serkov, Valentina A. Karnoukhova, Vadim V. Kachala, Alexander S. Shashkov, Igor E. Zanin, Angelina N. Kravchenko, Nina N. Makhova   +9 more
doaj   +1 more source

Synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexane via cyclopropene cycloadditions to the stable azomethine ylide derived from Ruhemann's purple

Beilstein Journal of Organic Chemistry, 2022
A reliable method for the synthesis of bis-spirocyclic derivatives of 3-azabicyclo[3.1.0]hexanes through the 1,3-dipolar cycloaddition (1,3-DC) reactions of cyclopropenes to the stable azomethine ylide – protonated form of Ruhemann's purple (PRP) has ...
Alexander S. Filatov, Olesya V. Khoroshilova, Anna G. Larina, Vitali M. Boitsov, Alexander V. Stepakov   +4 more
doaj   +1 more source

Advances in the Different Synthetic Routes of Fluorinated Hydrazines

The Chemical Record, Volume 26, Issue 6, June 2026.
This review highlights the various routes to the preparation of fluorinated hydrazines, thereby promoting the exploration of innovative methods for the synthesis of new N‐fluorinated hydrazines. Their synthesis mainly involves synthetic routes such as organometallic, organocatalytic, and photocatalytic.
Dimitra Kyrko, Benoît Crousse
wiley   +1 more source

Porphyrins in 1,3-dipolar cycloadditions with sugar azomethine ylides. Synthesis of pyrrolidinoporphyrin glycoconjugates

, 2005
Pyrrolidine-fused chlorins carrying an N- or C-linked -galactose residue were prepared by 1,3-dipolar cycloadditions of meso-tetrakis(pentafluorophenyl)porphyrin to galactose-substi-tuted azomethine ...
PERRONE, Daniela, TOME AC, DONDONI, Alessandro, NEVES MGPMS, CAVALEIRO JAS, SILVA AMG   +5 more
core   +1 more source

Phase‐Transfer‐Catalyzed Interrupted Barton–Zard Reaction Between Electron‐Deficient Indoles and Benzophenone‐Derived Isocyanides

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
A cascade reaction under phase‐transfer conditions between 3‐nitro indoles and isocyanomethylene dibenzenes affords the construction of pyrrolo[3,4‐b]indole cores. Control experiments provide insight into moderate product yields and clarify why the reaction is not amenable to asymmetric induction. A cascade reaction enabling the construction of pyrrolo[
Ana Mikleušević, Ines Bašić, Mateja Matišić, Josip Rešetar, Matija Gredičak   +4 more
wiley   +1 more source

Bifunctional AgOAc-Catalyzed Asymmetric [3 + 2] Cycloaddition of Azomethine Ylides

, 2016
A bifunctional AgOAc-catalyzed asymmetric cycloaddition of azomethine ylides with electronic-deficient alkenes was developed using ferrocenyloxazoline-derived N,P ligands.
Yong-Gui Zhou (1415290), Wei Zeng (126658)   +1 more
core   +1 more source

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, Wenting Zhao, Hongyi Zhao, Ziyun Lin, Dongfeng Zhang, Haihong Huang   +5 more
doaj   +1 more source