Results 131 to 140 of about 3,577 (190)

Asymmetric formal [1 + 2 + 2]-cycloaddition of diazoamides with enamines and carbonyl compounds. [PDF]

Nat Commun
Dong S, Yao M, Wang Y, Xie X, Jiang X, Xu X.   +5 more
europepmc   +1 more source

Asymmetric Isochalcogenourea-Catalyzed Synthesis of 3,4-Dihydropyrans via (4+2)-Cycloadditions of Ethyl But-3-ynoate with Michael Acceptors. [PDF]

Synlett
Hofer M, Piringer M, Scheucher A, Vogl LS, Waser M.   +4 more
europepmc   +1 more source

Influence of the Nature of Group 15 Element on [Au^I]-C≡E/Azide 1,3-Dipolar Cycloaddition Reaction. [PDF]

Inorg Chem
González-Pinardo D, Fernández I.
europepmc   +1 more source

Solvent Effects on the Selectivity of Ambimodal Dipolar/Diels-Alder Cycloadditions: A Study Using Explicit Solvation Models. [PDF]

Chemphyschem
Matsubuchi H, Hayashi D, Okamoto D, Noguchi A, Nakagawa S, Takayanagi T, Murakami T.   +6 more
europepmc   +1 more source

Nanoparticle‐Catalysed 1,3‐Dipolar Cycloadditions [PDF]

European Journal of Organic Chemistry, 2020
The 1,3‐dipolar cycloadditions of azomethine‐ylides and ‐imines, nitrones, nitrilimines, and azides catalysed by inorganic nanoparticles are described. Emphasis is given to the nanometric catalysts involved, their structure, characterisation, and recyclability and, when remarkable, their preparation.
Alessandro Ponti, Giorgio Molteni
exaly   +4 more sources

Asymmetric 1,3-dipolar cycloadditions of acrylamides

Chemical Society Reviews, 2010
This critical review, which is relevant to researchers in synthetic organic chemistry, focuses on asymmetric 1,3-dipolar cycloadditions with acrylamides. The use of chiral acrylamides as dipolarophiles leads to high levels of stereocontrol, due to conformational constraint in the acrylamides.
Marie Kissane, Anita R Maguire
exaly   +4 more sources

Transition Metal Complexation in 1,3-Dipolar Cycloadditions

HETEROCYCLES, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
BROGGINI, GIANLUIGI, MOLTENI G, TERRANEO A, ZECCHI, GAETANO ALDO   +3 more
openaire   +4 more sources

1,3-Dipolar cycloadditions of MeOPEG-bounded azides

Tetrahedron, 2005
1,3-Dipolar cycloadditions of MeOPEG-supported azide 2 with a variety of dipolarophiles have been studied. 1-MeOPEGsupported 1,2,3-triazoles 4 and 5, 1,2,3,4-tetrazoles 12 and aziridine 14 were obtained in nearly quantitative yields. The removal of the
Giorgio Molteni, Paola Del Buttero
exaly   +2 more sources