Results 11 to 20 of about 3,217 (192)

Morita-Baylis-Hillman and Rauhut-Currier Reactions of Conjugated Nitroalkenes [PDF]

CHIMIA, 2012
?-Functionalization of conjugated nitroalkenes and nitrodienes using various electrophiles in the presence of amine catalysts such as imidazole and DMAP and the synthetic applications of the products are reviewed.
Kirandeep Kaur, Irishi N. N. Namboothiri
doaj   +2 more sources

Imidazoline‐Proline and Imidazoline‐Prolinate Ligands for Copper‐Catalyzed Asymmetric Exo‐Selective [3 + 2] Cycloaddition of Iminoesters with Nitroalkenes

ChemistryEurope
Diphenylethylenediamine‐derived imidazoline‐amino acid derivatives are designed as nonphosphine chiral nitrogen ligands for metal‐catalyzed exo‐selective [3 + 2] cycloaddition reaction of iminoesters with nitroalkenes.
Yan Yu, Takuya Shimada, Chihiro Tokumitsu, Ayaka Fujiwara, Takayoshi Arai   +4 more
doaj   +2 more sources

Mukaiyama-Michael vinylogous additions to nitroalkenes under solvent-free conditions

Open Chemistry, 2012
The first Mukaiyama-Michael vinylogous reaction of a dioxinone-derived silyl ether to nitroalkenes is reported. The conjugate addition is performed in absence of any catalyst under solvent-free conditions, proceeding with satisfactory efficiency with ...
Scettri Arrigo, Villano Rosaria, Manzo Patrizia, Acocella Maria   +3 more
doaj   +3 more sources

Fully Selective Synthesis of Spirocyclic-1,2-oxazine N-Oxides via Non-Catalysed Hetero Diels-Alder Reactions with the Participation of Cyanofunctionalysed Conjugated Nitroalkenes

Molecules, 2023
Hetero Diels-Alder (HDA) reactions with the participation of E-2-aryl-1-cyano-1-nitroethenes and methylenecyclopentane were evaluated on the basis of experimental as well as quantumchemical data.
Przemysław Woliński, Agnieszka Kącka-Zych, Aneta Wróblewska, Ewelina Wielgus, Rafał Dolot, Radomir Jasiński   +5 more
doaj   +1 more source

Use of Phenyl Formate as a CO Surrogate for the Reductive Cyclization of Organic Nitro Compounds to Yield Different N-Heterocycles: Avoiding the Use of Autoclaves and Pressurized Gases

Chemistry Proceedings, 2022
The reductive cyclization of different organic nitro compounds by carbon monoxide, catalyzed by transition metal complexes, is a very efficient and clean strategy for the synthesis of many N-heterocycles.
Fabio Ragaini, Francesco Ferretti, Manar Ahmed Fouad   +2 more
doaj   +1 more source

Recent Advances in Benzannulation Approaches to Aromatic Frameworks. [PDF]

Chem Asian J
This review summarizes benzannulation strategies reported over the past 5 years, highlighting recent advances that enable efficient access to structurally diverse and highly substituted arenes through both transition‐metal‐catalyzed and metal‐free approaches.
Kim H, Kwon Y.
europepmc   +2 more sources

N-Sulfinylpyrrolidine-containing ureas and thioureas as bifunctional organocatalysts

Beilstein Journal of Organic Chemistry, 2021
The synthesis of bifunctional N-sulfinylureas and thioureas with an appended pyrrolidine unit is presented. These organocatalysts were evaluated in Michael additions of aldehydes to nitroalkenes both under solvent-free conditions and in solution.
Viera Poláčková, Dominika Krištofíková, Boglárka Némethová, Renata Górová, Mária Mečiarová, Radovan Šebesta   +5 more
doaj   +1 more source

The Participation of 3,3,3-Trichloro-1-nitroprop-1-ene in the [3 + 2] Cycloaddition Reaction with Selected Nitrile N-Oxides in the Light of the Experimental and MEDT Quantum Chemical Study

Molecules, 2021
The regioselective zw-type [3 + 2] cycloaddition (32CA) reactions of a series of aryl-substituted nitrile N-oxides (NOs) with trichloronitropropene (TNP) have been both experimentally and theoretically studied within the Molecular Electron Density Theory
Karolina Zawadzińska, Mar Ríos-Gutiérrez, Karolina Kula, Przemysław Woliński, Barbara Mirosław, Tomasz Krawczyk, Radomir Jasiński   +6 more
doaj   +1 more source

Visible Light‐Mediated Reactions of β‐Nitroalkenes [PDF]

, 2023
Organic transformations using visible light-mediated photoredox reactions received significant attention in the past several years. Recently, nitroalkenes have emerged as an excellent coupling partner in the visible light-mediated photoredox reactions ...
Nair, Divya K., Kumar, Tarun, Tarun Kumar, Jesline, Mukkath J., Mukkath J. Jesline, Sudheesh T. Sivanandan, Sivanandan, Sudheesh T., Divya K. Nair   +7 more
core   +1 more source

Full Regio- and Stereoselective Protocol for the Synthesis of New Nicotinoids via Cycloaddition Processes with the Participation of Trans-Substituted Nitroethenes: Comprehensive Experimental and MEDT Study

Molecules, 2023
[3 + 2] Cycloaddition reactions with the participation of Z-C-(3-pyridyl)-N-methylnitrone and series of E-2-R-nitroethenes were both experimentally and theoretically explored in the framework of Molecular Electron Density Theory.
Jowita Kras, Przemysław Woliński, Roman Nagatsky, Oleg M. Demchuk, Radomir Jasiński   +4 more
doaj   +1 more source