Results 81 to 90 of about 13,198 (167)

Highly Efficient Asymmetric [3+2] Cycloaddition Promoted by Chiral Aziridine-Functionalized Organophosphorus Compounds

Molecules
The asymmetric [3+2] cycloaddition of azomethine ylides generated from the corresponding imino ester-to-trans-β-nitrostyrene catalysis by chiral aziridine-containing phosphines and phosphine oxides is described. Of the sixteen stereoisomers that could be
Julia Szymańska, Michał Rachwalski, Adam M. Pieczonka   +2 more
doaj   +1 more source

Cu(I)-Catalyzed Highly Exo-selective and Enantioselective [3 + 2] Cycloaddition of Azomethine Ylides with Acrylates

, 2016
A novel Cu(I)-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylides with acrylates has been developed.
Xumu Zhang (1447558), Malati Raghunath (2670928), Wenzhong Gao (2640859)   +2 more
core   +1 more source

The Chemistry of Azomethine Ylides Developed in the Institute

, 1988
The research on azomethine ylide 1,3-dipoles, developed in the last five years in the Institute of Advanced Material Study, Kyushu University, is briefly reviewed.
Kanemasa, Shuji, 金政, 修司
core  

Chiral catalysts in the stereoselective synthesis of pyrrolidine derivatives via metallo-azomethine ylides

, 2005
Intensive research over the last few decades in the area of the cycloaddition reactions of metallo-azomethine ylides has resulted, in recent years, in the development of a number of highly diastereo- and enantioselective ...
Vladimir Savic, Suren Husinec, Husinec, Suren, Savić, Vladimir   +3 more
core   +1 more source

Diastereoselective cycloadditions of new trifluoromethyl azomethine ylides derived from trifluorothioacetamides

, 1996
Two methods of generation of new trifluoromethyl azomethine ylides are described: by heating N,N-dimethyl-bis(methylthio)-orthotrifluoroacetamide 2 or by deprotonation of trifluoromethyl thioamidium salts.
Ates, C., Laduron, F., Viehe, HG., Heinz G. Viehe, Frédéric Laduron, Célal Ates   +5 more
core   +1 more source

Stereoselective Synthesis of Densely Substituted Pyrrolidines via a [3 + 2] Cycloaddition Reaction between Chiral <i>N</i>-<i>tert</i>-Butanesulfinylazadienes and Azomethine Ylides. [PDF]

Org Lett, 2023
Blanco-López E, Foubelo F, Retamosa MG, Sansano JM.   +3 more
europepmc   +1 more source

Separation of Semiconducting from Metallic Carbon Nanotubes by Selective Functionalization with Azomethine Ylides

, 2016
A mild and efficient method for the functionalization of SWNTs by cycloaddition of azomethine ylides derived from trialkylamine-N-oxides is described.
Nicolas Izard (1768657), Cécilia Ménard-Moyon (2518924), Eric Doris (1865236), Charles Mioskowski (2301244)   +3 more
core   +1 more source

Electron-rich benzofulvenes as effective dipolarophiles in copper(i)-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylides. [PDF]

Chem Sci, 2023
Chang X, Liu XT, Li F, Yang Y, Chung LW, Wang CJ.   +5 more
europepmc   +1 more source

A new chiral phosphine oxide ligand for enantioselective 1,3-dipolar cycloaddition reactions of azomethine ylides

, 2010
A new set of phosphorus-containing chiral ligands has been synthesized and used with silver(I) for the catalytic asymmetric 1 3-dipolar cycloaddition reaction of azomethine ylides One of these ligands (POFAM6) was found to produce an effective catalyst ...
Philip P. Garner, Serap Eröksüz, Özdemir Dogan, Doğan, Özdemir, Garner, Philip P., ERÖKSÜZ, Serap   +5 more
core   +1 more source

Multicomponent synthesis, biological evaluation and molecular docking of new spiro-oxindole derivatives

Journal of Taibah University for Science, 2017
A new series of spiro-oxindoles that were identified based upon their ability to inhibit methionine tRNA synthase (PDB ID: 1PFV) and glucosamine-6-phosphate synthase (PDB ID: 1JXA) enzymes in virtual screening was synthesized by a three-component 1,3 ...
M. Sapnakumari, B. Narayana, K.S. Shashidhara, B.K. Sarojini   +3 more
doaj   +1 more source