Results 51 to 60 of about 2,875 (189)

Konjugierte Anorganisch‐Organische Hybrid‐Polymere mit p‐Block Elementen

Angewandte Chemie, Volume 138, Issue 2, 9 January 2026.
Der Einfluss unterschiedlicher p‐Block‐Element‐Motive auf die photophysikalischen Eigenschaften konjugierter anorganisch‐organischer Hybridpolymere im Hinblick auf die Anwendung in organischen Elektronikbauteilen wird dargelegt. Die jüngsten Fortschritte beim Einsatz der schwereren Elemente und schwererer Mehrfachbindungen sowie zu diversen (Post ...
Anna‐Lena Thömmes, David Scheschkewitz   +1 more
wiley   +1 more source

Multicomponent synthesis of spiropyrrolidine analogues derived from vinylindole/indazole by a 1,3-dipolar cycloaddition reaction

Beilstein Journal of Organic Chemistry, 2016
A new series of spiropyrrolidine compounds containing indole/indazole moieties as side chains have been accomplished via a one-pot multicomponent synthesis.
Manjunatha Narayanarao, Lokesh Koodlur, Vijayakumar G. Revanasiddappa, Subramanya Gopal, Susmita Kamila   +4 more
doaj   +1 more source

Conjugated Inorganic–Organic Hybrid Polymers with p‐Block Elements

Angewandte Chemie International Edition, Volume 65, Issue 2, 9 January 2026.
The influence of various p‐block element motifs on the photophysical properties of conjugated inorganic‐organic hybrid polymers is surveyed regarding applications in organic electronics. Recent advances in the use of heavier elements as well as heavier multiple bonds and the development of diverse (post‐)functionalization strategies suggest ample scope
Anna‐Lena Thömmes, David Scheschkewitz   +1 more
wiley   +1 more source

Copper-Catalyzed Asymmetric Dearomative [3+2] Cycloaddition of Nitroheteroarenes with Azomethines

Molecules, 2023
Catalytic asymmetric dearomative [3+2] cycloaddition of α-imino γ-lactones with either 3-nitroindoles or 2-nitrobenzofurans by using a chiral copper complex as the catalyst was developed.
Yan Chen, Jian-Qiang Zhao, Yan-Ping Zhang, Ming-Qiang Zhou, Xiao-Mei Zhang, Wei-Cheng Yuan   +5 more
doaj   +1 more source

Copper–phenanthroline catalysts for regioselective synthesis of pyrrolo[3′,4′:3,4]pyrrolo[1,2-a]furoquinolines/phenanthrolines and of pyrrolo[1,2-a]phenanthrolines under mild conditions

Beilstein Journal of Organic Chemistry, 2014
A new series of pyrrolo[3′,4′:3,4]pyrrolo[1,2-a]furoquinolines/phenanthrolines and pyrrolo[1,2-a]phenanthrolines were efficiently built up from an 8-hydroxyquinoline derivative or phenanthroline via 1,3-dipolar cycloaddition reaction involving non ...
Rupankar Paira, Tarique Anwar, Maitreyee Banerjee, Yogesh P. Bharitkar, Shyamal Mondal, Sandip Kundu, Abhijit Hazra, Prakas R. Maulik, Nirup B. Mondal   +8 more
doaj   +1 more source

Inverse‐Electron‐Demand Diels–Alder Reaction of Tropone with Graphene Supported on Cu(111)

Small, Volume 21, Issue 44, November 6, 2025.
The inverse‐electron‐demand Diels–Alder reaction between tropone and graphene supported on Cu(111), catalyzed by B(C6F5)3 or BPh3, gave [4 + 2] and [8 + 2] cycloadducts, respectively. Computations reveal that the cycloadditions become favorable on curved graphene with secondary substrate charge transfer effects and reveal the origins of the product ...
Jia Tu, Wentong Zhou, Lawrence M. Wolf, Mingdi Yan   +3 more
wiley   +1 more source

Green Light Promoted Iridium(III)/Copper(I)-Catalyzed Addition of Alkynes to Aziridinoquinoxalines Through the Intermediacy of Azomethine Ylides [PDF]

, 2023
Oleksii Zhelavskyi, S. Parikh, Richard J. Staples, Paul M. Zimmerman, Pavel Nagorny   +4 more
openalex   +1 more source

Versatile Photofunctionalization of Carbon Nanotubes via [4 + 2] Cycloaddition: A Facile Route to Hybrid Nanomaterials

Small Science, Volume 5, Issue 11, November 2025.
A [4 + 2] photocycloaddition of aryl cyclobutyl amines on carbon nanotubes is presented. A photocatalyst oxidizes the cyclic moiety to generate an active species trapped by the nanotube π‐cloud. The method functionalizes nanotubes of different characteristics and is tolerant to different functional groups decorating the amine.
Giacomo De Crescenzo, Paula Sánchez‐Morena, Alberto Fraile, Matías Blanco, José Alemán   +4 more
wiley   +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

Redrawing the Mannich‐Type Reaction through Carbonyl Umpolung Reactivity

Advanced Synthesis &Catalysis, Volume 367, Issue 20, October 29, 2025.
GA: Herein, a conceptually novel one‐pot multicomponent strategy is reported for the streamlined construction of five‐membered imidazolidines from 1,2‐diaza‐1,3‐dienes (onefold), amines (twofold), and formaldehyde (twofold). This redesigned Mannich‐type reaction that exploits a carbene‐like activity of 1,2‐diaza‐1,3‐dienes (realized by “umpolung ...
Vittorio Ciccone, Sara Caselli, Giacomo Mari, Fabio Mantellini, Gianfranco Favi   +4 more
wiley   +1 more source