Results 181 to 190 of about 140,419 (292)
Angewandte Chemie, EarlyView.Stable imino‐substituted Au(III) carbenes are easily and efficiently prepared by trapping the transient (N^C^C)Au←:CH(dmp)+ carbene with nitriles. The corresponding free species are readily generated and display dual carbene / nitrile‐ylide reactivities. The diazo decomposition, nitrile insertion, and carbene transfer can be combined in three‐component
Rui Wei +4 more
wiley +2 more sources
Catalytic cycloaddition of acrylates to norbornadiene. Kinetics and mechanism
Тонкие химические технологии, 2010 Kinetics of [2+2+2]-cycloaddition of acrylates to norbornadiene in the presence of η3-bis(allyl) nickel was studied. The thermodynamic parameters were determined. Kinetics equations for all of the isomer reaction products were found.
I. E. Efros +3 more
doaj
PPh3/Isocyanide and N2/Isocyanide Exchange: Pathways to Isolable Alkali Metal Keteniminyl Anions
Angewandte Chemie, EarlyView.The synthesis of isolable keteniminyl anions through substitution of the phosphine ligand in metalated ylides or the N₂ ligand in diazomethanides with isocyanides is reported. The anions feature a bent geometry, with the angle decreasing with increasing donor ability of the nitrogen substituent, and exhibit broad applicability in the formation of ...
Sunita Mondal +7 more
wiley +2 more sources
Site‐Selective Carbonylation of Azetidines via Copper‐Catalyzed Difluorocarbene Insertion
Angewandte Chemie, EarlyView.We disclose a site‐selective Cu‐catalyzed carbonylation of azetidines promoted by difluorocarbene insertion at low temperature, enabling access to a variety of functionalized γ‐lactams and a therapeutic agent for diabetes (40 examples). This skeletal expansion strategy provides a distinct disconnection approach to synthesize medicinally relevant five ...
Fang Zhou, Tong‐De Tan, Ming Joo Koh
wiley +2 more sources
Cycloaddition of Spiro[2.4]hepta-4,6-diene to Tropone [PDF]
, 1972 Hiroshi Tanida +2 more
openalex +1 more source
Negative and positive anisotropic thermal expansion in 2D fullerene networks [PDF]
arXivWe find a design principle for tailoring thermal expansion properties in molecular networks. Using 2D fullerene networks as a representative system, we realize positive thermal expansion along intermolecular [2+2] cycloaddition bonds and negative thermal expansion along intermolecular C$-$C single bonds by varying the structural frameworks of molecules.
arxiv
Angewandte Chemie, EarlyView.A monomeric alumylene stabilized by two donor ligands (phosphine and NHC) has been successfully synthesized. This alumylene complex exhibits an enhanced nucleophilic character and a preserved ambiphilic reactivity compared to the monoligated complex. As a consequence, its oxidation by N2O proceeds even at −90 °C, allowing the synthesis of an acceptor ...
José Miguel León Baeza +8 more
wiley +2 more sources
Nitrone Ionization Potentials and Cycloaddition Regioselectivities
, 1977 K. N. Houk +6 more
openalex +1 more source