In dynamic covalent chemistry, reactions follow a thermodynamically controlled pathway through equilibria. Reversible covalent-bond formation and breaking in a dynamic process enables the interconversion of products formed under kinetic control to thermod
Switching Diastereoselectivity in Catalytic Enantioselective (3+2) Cycloadditions of Azomethine Ylides Promoted by Metal Salts and Privileged Segphos-Derived Ligands
Catalytic enantioselective 1,3-dipolar cycloaddition between imino esters and electrophilic alkenes, employing chiral metal complexes derived from copper(I) and silver(I) salts and (S)-DM-or (S)-DTBM-Segphos as ligands produces diastereodivergently exo-or
Caleffi, Guilherme S.,Larran?ga, Olatz,Ferrándiz-Saperas, Marcos,Costa, Paulo R. R.,Nájera, Carmen,De Cózar, Abel,Cossió, Fernando P.,Sansano, José M.
p. 10593 - 10605
(2019/09/03)
Axially chiral BINIM and Ni(II)-catalyzed highly enantioselective 1,3-dipolar cycloaddition reactions of azomethine ylides and N-arylmaleimides
(Chemical Equation Presented) Axially chiral BINIM-Ni(II) complexes are effective catalysts in the asymmetric 1,3-dipolar cycloaddition reactions of azomethine ylides and N-arylmaleimides to give the corresponding adducts in good yields and up to 95% enan
Shi, Jing-Wen,Zhao, Mei-Xin,Lei, Zhi-Yu,Shi, Min
p. 305 - 308
(2008/09/17)
Highly enantioselective 1,3-dipolar cycloaddition of azomethine ylides catalyzed by copper(l)/TF-BiphamPhos complexes
Chiral thiophosphoramide and selenophosphoramide ligands in the Cu(I)-promoted catalytic enantioselective 1,3-dipolar cycloaddition reactions of azomethine ylides and pyrrole-2,5-dione derivatives
Chiral C2-symmetric diphenylthiophosphoramide ligand L1 prepared from C2-symmetric (1S,2S)-(-)-1,2-diphenylethylenediamine was found to be a fairly effective chiral ligand for Cu(I)-promoted 1,3-dipolar cycloaddition of imines and py
Shi, Min,Shi, Jing-Wen
p. 645 - 650
(2007/10/03)
Cu(I)-catalyzed highly exo-selective and enantioselective [3 + 2] cycloaddition of azomethine ylides with acrylates
(Chemical Equation Presented) A novel Cu(I)-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylides with acrylates has been developed. Up to 98/2 exo/endo selectivity and up to 98% enantiomeric excess have been achieved.
Gao, Wenzhong,Zhang, Xumu,Raghunath, Malati
p. 4241 - 4244
(2007/10/03)
A convenient procedure for the catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides and alkenes
(Chemical Equation Presented) Silver fluoride and cinchona alkaloids catalyze the diastereo- and enantioselective 1,3-dipolar cycloaddition between azomethine ylides, generated from N-alkylideneglycine esters, and acrylates to give the corresponding endo-adducts. Azomethine ylides derived from aromatic and aliphatic aldehydes react in a highly diastereoselective reaction with good yields and enantioselectivities of the substituted pyrrolidines.
Alemparte, Carlos,Blay, Gonzalo,Jorgensen, Karl Anker
p. 4569 - 4572
(2007/10/03)
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