Results 141 to 150 of about 2,873,864 (246)

Modular Access to α‐Tertiary Amines: Electrochemical Tandem Di‐Functionalization of Olefins With Ammonia Surrogates and Amino Acids

Angewandte Chemie, EarlyView.
A metal‐ and oxidant‐free electrochemical multicomponent di‐functionalization strategy that rapidly converts 1,1‐disubstituted alkenes into α‐tertiary primary amines with simultaneous installation of bio‐relevant sulfur or selenium motifs was devised for late‐stage functionalization. ABSTRACT Quaternary carbon centers, especially those bearing nitrogen,
Adrija Ghosh, Tarun, Sven Erik Peters, Lutz Ackermann, Debasis Banerjee   +4 more
wiley   +2 more sources

Tetraphenylmethane Derivatives Containing Nitrogen Heterocycles

SynOpen
Sambasivarao Kotha, Deepshikha Singh
doaj   +1 more source

Nitrogen Radical Photocatalysed Reduction of Nitrous Oxide

Angewandte Chemie, EarlyView.
This work offers the first example of reduction of the potent greenhouse gas N2O to the benign products N2 and O(Bpin)2 using a nitrogen‐based catalyst. The active catalyst is shown to be a nitrogen‐based radical which operates under photocatalytic conditions.
Reece Lister‐Roberts, Agamemnon E. Crumpton, Meera Mehta   +2 more
wiley   +2 more sources

Organocatalytic Asymmetric Annulation of 2-Aminophenyl-Derived α,β-Unsaturated Systems: Access to Chiral Benzene-fused Nitrogen-containing Heterocycles

Nitrogen-containing heterocycles are ubiquitous structural motifs in biologically active natural products, pharmaceuticals, and functional molecules. Among them, benzene-fused nitrogen-containing heterocycles, particularly quinoline-derived frameworks ...
Minhyeok Jeon, Sung-Gon Kim
core   +1 more source

Tunable Oxygen Connectivity in Carbaporphyrinoid Polymers on Metal Surfaces

Angewandte Chemie, EarlyView.
Hydroxyl‐functionalized dicarbaporphyrinoid polymers synthesized on Au(111) enable tunable oxygen‐mediated connectivity under UHV conditions. Thermal activation yields one‐dimensional hydroxyl‐terminated polymers that can selectively evolve into either covalently‐linked dibenzo‐p‐dioxane architectures through intermolecular C–O–C coupling or two‐fold ...
Alberto Martínez‐Bajo, Maxence Urbani, Ana Barragán, Óscar Jover, Elena Pérez‐Elvira, Ilaria Tomei, Claudio Goletti, Alejandro Jiménez‐Martín, Aurelio Gallardo, Koen Lauwaet, David Écija, Diego Soler‐Polo, Marco Di Giovannantonio, Tomás Torres, José I. Urgel   +14 more
wiley   +2 more sources

DIHYDRODIPYRIDOPYRAZINES: SYNTHESIS AND FUNCTIONALIZATION

Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2010
Different conceptual synthetic approaches to the elaboration of a new family of planar polynuclear nitrogen containing aromatic heterocycles – the dihydrodipyridopyrazines – are reviewed: the arynic reaction, the sequence palladium coupling reaction ...
Gérald Guillaumet, Adriana Fînaru, Oana-Irina Patriciu, Stéphanie Blanchard, Irina Grig-Alexa   +4 more
doaj  

A novel and robust heterogeneous Cu catalyst using modified lignosulfonate as support for the synthesis of nitrogen-containing heterocycles. [PDF]

Beilstein J Org Chem, 2020
Lai B, Ye M, Liu P, Li M, Bai R, Gu Y.
europepmc   +1 more source

Enantioselective Synthesis of Spirocyclic Nitrogen-Containing Heterocycles Catalyzed by an Iridium-Containing Cytochrome. [PDF]

J Am Chem Soc
Xu J, Bloomer BJ, Brunn JN, Quest AP, Chakraborty S, Schneider JE, Clark DS, Hartwig JF.   +7 more
europepmc   +1 more source

Development of an LC-MS method for determination of nitrogen-containing heterocycles using mixed-mode liquid chromatography. [PDF]

Anal Bioanal Chem, 2020
Abdighahroudi MS, Lutze HV, Schmidt TC.
europepmc   +1 more source

Vanillin-tethered quinazolin-2,4-dione analogues through five- and/or six-membered nitrogen-containing heterocycles as antibacterial agents: synthesis, biological evaluation and molecular docking study. [PDF]

RSC Adv
Abdelmonsef AH, Elnaby SM, Mosallam AM, Rashdan HRM, Alsoghier HM, Raslan MA.   +5 more
europepmc   +1 more source