Results 11 to 20 of about 470,592 (137)
Unified Synthesis of Unconventional α-Polyhalogenated Amines Through Hydroaminoalkylation. [PDF]
Angew Chem Int Ed EnglA unified, redox‐neutral method that transforms alkenes and alkynes into α‐polyhalomethyl amines using stable hemiaminal reagents is reported. This approach enables access to CF3, CF2H, CF2Cl, and CFClH motifs, expanding halogenated amine space with broad substrate scope, functional group tolerance, and applicability to late‐stage modification of drug ...
Hofmeister AK +9 more
europepmc +2 more sources
, 2016 Alcohol-directed intramolecular methylation of an enantiopure allyl sulfone using AlMe3 provides a trans-hydrindane CD ring alcohol. The substrate cis-CD ring allyl sulfone alcohol is prepared via intramolecular allyl sulfonyl anion addition to aldehyde ...
Philip L. Fuchs (2078608) +1 more
core +2 more sources
Palladium-catalyzed selective activation of allyl alcohols as allyl cations, allyl anions, and zwitterionic trimethylenemethanes [PDF]
, 2008 Pd-Et3B catalytic system promotes the generation of allyl cations, allyl anions, and zwitterionic trimethylenemethane species from the corresponding allylic alcohols. Allyl cations react with a wide variety of nucleophiles, e.g., amines, active methylene
Tamaru, Yoshinao, Kimura, Masanari
core +1 more source
Flavin Catalysts in Organic Synthesis
Angewandte Chemie, EarlyView.Flavins and their congeners are potent catalysts for organic synthesis inspired by enzymatic transformations. In addition to catalysis in the flavin ground state via covalent intermediates, the excited singlet and triplet states unlock applications including photooxidation, photoreduction, and energy transfer via sensitization.
Jan Freudenberg, Golo Storch
wiley +2 more sources
Angewandte Chemie, EarlyView.Modular access to underexplored C5‐sulfenyl thiazoles via an intermolecular Pummerer rearrangement is reported. The methodology exhibits a broad functional group tolerance enabling the seamless design of trisubstituted thiazole cores bearing a sulfur handle for further elaboration.
Joe L. Smy +5 more
wiley +2 more sources
Sulfination of Unactivated Allylic Alcohols via Sulfinate–Sulfone Rearrangement
, 2023 A dehydrative cross-coupling of unactivated allylic alcohols with sulfinic acids was achieved under catalyst-free conditions. This reaction proceeded via allyl sulfination and concomitant allyl sulfinate–sulfone rearrangement.
Teck-Peng Loh (1433638) +8 more
core +1 more source
Methyl Elimination Channel Of The Photodissociation Of Allyl Radical: Semi-Classical Simulation And Velocity-Map-Imaging [PDF]
, 2011 Allyl radical is one of the most important stable radicals in the study of hydrocarbon combustion chemistry. Most of the competing dissociation channels for allyl radicals excited with a specific internal energy yield atomic or molecular hydrogen. Little
Lee, David
core +6 more sources
Conformational properties of methyl vinyl sulfone: Ab initio geometry optimization and vibrational analysis [PDF]
, 1996 An ab initio conformational analysis of methyl vinyl sulfone (CH₂CHSO₂CH₃) has been carried out. Molecular geometry optimizations have been performed at the HF and MP2 levels of the theory.
Fantoni, Adolfo Carlos, Marañón, Julio
core +1 more source
Conformational properties of methyl vinyl sulfone: Ab initio geometry optimization and vibrational analysis [PDF]
, 2022 An ab initio conformational analysis of methyl vinyl sulfone (CH₂CHSO₂CH₃) has been carried out. Molecular geometry optimizations have been performed at the HF and MP2 levels of the theory.
Fantoni, Adolfo Carlos, Marañón, Julio
core
, 2016 The cyclizations of the substituted allyl α-methyl-β-ketoester radicals 11, 14, and 18 were studied by the DFT method at the UB3LYP/6-31G* level; the results show that the cis cyclization is easier than the corresponding trans cyclization, but the ...
Kuangsen Sung (1609747) +1 more
core +1 more source