Results 11 to 20 of about 27,751 (287)

A Molecular Electron Density Theory Study of the [3+2] Cycloaddition Reaction of an Azomethine Ylide with an Electrophilic Ethylene Linked to Triazole and Ferrocene Units [PDF]

Molecules, 2022
The [3+2] cycloaddition (32CA) reaction of an azomethine ylide (AY) with an electrophilic ethylene linked to triazole and ferrocene units has been studied within the Molecular Electron Density Theory (MEDT) at the ωB97X-D/6-311G(d,p) level.
Luis R. Domingo, Mar Ríos-Gutiérrez, Assem Barakat   +2 more
doaj   +2 more sources

Microwave‐Assisted [3 + 2] Cycloadditions of Azomethine Ylides. [PDF]

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
George Bashirhiardes, I. Safir, Achmet Said Mohamed, F. Barbot, Joëlle Laduranty   +4 more
openalex   +6 more sources

Unexpected Course of Reaction Between (1E,3E)-1,4-Dinitro-1,3-butadiene and N-Methyl Azomethine Ylide—A Comprehensive Experimental and Quantum-Chemical Study [PDF]

Molecules
In recent times, interest in the chemistry of conjugated nitrodienes is still significantly increasing. In particular, the application of these compounds as building blocks to obtain heterocycles is a popular object of research.
Mikołaj Sadowski, Karolina Kula
doaj   +2 more sources

The azomethine ylide route to amine C-H functionalization: redox-versions of classic reactions and a pathway to new transformations. [PDF]

Acc Chem Res, 2015
Conspectus Redox-neutral methods for the functionalization of amine α-C–H bonds are inherently efficient because they avoid external oxidants and reductants and often do not generate unwanted byproducts. However, most of the current methods for amine α-C–
Seidel D.
europepmc   +2 more sources

Azomethine Ylides—Versatile Synthons for Pyrrolidinyl-Heterocyclic Compounds

Molecules, 2023
Azomethine ylides are nitrogen-based three-atom components commonly used in [3+2]-cycloaddition reactions with various unsaturated 2π-electron components.
Siva S. Panda, Marian N. Aziz, Jacek Stawinski, Adel S. Girgis   +3 more
doaj   +3 more sources

Stereoselective Ag-Catalyzed 1,3-Dipolar Cycloaddition of Activated Trifluoromethyl-Substituted Azomethine Ylides [PDF]

, 2016
This is the peer reviewed version of the following article: Chemistry – A European Journal 22.14 (2016): 4952 - 4959, which has been published in final form at http://doi.org/10.1002/chem.201504869. This article may be used for non-commercial purposes in
Adrio, Adrio, Arai, Bai, Beausoleil, Begue, Belhomme, Bezdudny, Bonin, Burger, Castello, Castelló, Chaume, Cheng, Corbett, Dai, Dai, Daly, Das, Erickson, Fritz, Fujiwara, González-Esguevillas, Gouverneur, Hashimoto, He, Huang, Khangarot, Kuhnert, Laduron, Li, Li, Li, Llamas, Ma, McAlpine, Michael, Müller, Nájera, O'Hagan, Ojima, Padilla, Pandey, Pascual-Escudero, Pellissier, Pinho e Melo, Potowski, Purser, Pyne, Roughley, Sato, Schlosser, Song, Stanley, Sun, Tanaka, Tran, van Niel, Whitby, Yan, Yang, Yuan, Zhao   +62 more
core   +4 more sources

A Versatile cascade of intramolecular vilsmeier-haack and azomethine ylide 1,3-dipolar cycloaddition toward tricyclic cores of alkaloids [PDF]

, 2008
: In the pursuit of synthetic efficiency, we developed an innovative one-pot transformation of linear substrates into bi- and tricyclic adducts using a cascade of amide activation, nucleophilic cyclization, azomethine ylide generation, and subsequent ...
Barbe G., Bélanger G., Bélanger G., Coelho R. M., Coldham I., Houk K. N., Jones R. C. F., Nicolaou K. C., Smith R., Tietze L. F., Tsuge O., Tsuge O., Tóth G., Wasserman H. H.   +13 more
core   +2 more sources

Synthesis of Some New 3-Pyrrolidinylquinoline Derivatives via 1,3-Dipolar Cycloaddition of Stabilized Azomethine Ylides to Quinolinyl α,β- Unsaturated Ketones [PDF]

, 2010
International audienceN-Metallated azomethine ylide generated from methyl (E)-N-benzylideneglycinate, LiBr and triethylamine underwent cycloaddition to quinolyl α,β- unsaturated ketones with excellent diastereoselectivity to afford new functionalised 3 ...
Belfaitah, Ali, Benali-Cherif, N., Bouraiou, Abdelmalek, Carboni, Bertrand, Debache, Abdelmadjid, Rhouati, Salah   +5 more
core   +3 more sources

Construction of the 5,10b‐Phenanthridine Skeleton Using [3+2]‐Cycloaddition of a Non‐Stabilized Azomethine Ylide: Total Synthesis of (±)‐Maritidine and (±)‐Crinine Alkaloids [PDF]

, 2010
Vicinal quaternary and tertiary stereocenters of the 5,10b-phenanthridine skeleton 1 are constructed simultaneously in one step by the [3+2]-cycloaddition of non-stabilized azomethine ylide 9, generated by sequential double desilylation of 10 utilizing ...
Ganesh Pandey, Nishant R. Gupta, Smita R. Gadre   +2 more
openalex   +2 more sources

Stereoselective cyclo-addition reactions of azomethine ylides catalysed by in situ generated Ag(I)/bisphosphine complexes [PDF]

, 2010
Stereoselective cyclo-addition reactions of azomethine ylides promoted by in situ generated Ag(I)/bisphosphine complexes were studied. Under the optimised conditions, the pyrrolidine products were isolated in up to 84 % yield and with up to 71 % e.e. The
RONALD GRIGG, SUREN HUSINEC, VLADIMIR SAVIĆ   +2 more
core   +2 more sources