Results 131 to 140 of about 43,074 (261)
Quelles compétences pour les bibliothèques de recherche ? [PDF]
, 2016 The one-step preparation of 1-nitrobicyclo[3.1.0]hexane and bicycloisoxazoline-N-oxide was readily achieved from conjugate adducts of nitro alkenes and allylmalonates by treatment with Ag2O and iodine under basic conditions.
Akio Kamimura (1754224) +4 more
core +7 more sources
New cofactor supports α,β-unsaturated acid decarboxylation via 1,3-dipolar cycloaddition
Nature, 2015 The bacterial ubiD and ubiX or the homologous fungal fdc1 and pad1 genes have been implicated in the non-oxidative reversible decarboxylation of aromatic substrates, and play a pivotal role in bacterial ubiquinone (also known as coenzyme Q) biosynthesis ...
K. Payne +14 more
semanticscholar +1 more source
Reversible Nanocomposites With Carbon Nanotubes as the Diene in the Diels–Alder Reaction
Polymer Composites, EarlyView.Scheme of the reversible nanocomposites through DA and rDA reactions with participation of carbon nanotubes. ABSTRACT Carbon nanotubes (CNTs) often require surface functionalization to facilitate uniform distribution and address issues related to aggregation. Due to the sp2 hybridized carbon atoms on their surface, CNTs readily participate in the Diels–
Jie Guo +3 more
wiley +1 more source
Journal of Chemistry, 2013 Some new N-substituted pyridazinones and triazolo[4,3-b]pyridazinones were synthesized, respectively, by simple alkylation and 1,3-dipolar cycloaddition of pyridazin-3-one with nitrile imines.
Souad Mojahidi +6 more
doaj +1 more source
1,3-Dipolar cycloadditions of 2-thio-3-chloroacrylamides with diazoalkanes [PDF]
, 2010 2-Thio-3-chloroacrylamides undergo 1,3-dipolar cycloadditions with diazoalkanes leading to a series of novel pyrazolines and pyrazoles. The mechanistic and synthetic features of the cycloadditions to the 2-thio-3-chloroacrylamides at both the sulfide and
Kissane, Marie +2 more
core +1 more source
Inverse‐Electron‐Demand Diels–Alder Reaction of Tropone with Graphene Supported on Cu(111)
Small, EarlyView.The inverse‐electron‐demand Diels–Alder reaction between tropone and graphene supported on Cu(111), catalyzed by B(C6F5)3 or BPh3, gave [4 + 2] and [8 + 2] cycloadducts, respectively. Computations reveal that the cycloadditions become favorable on curved graphene with secondary substrate charge transfer effects and reveal the origins of the product ...
Jia Tu +3 more
wiley +1 more source
Crystal structure of (2R*,3aR*)-2-phenylsulfonyl-2,3,3a,4,5,6-hexahydropyrrolo[1,2-b]isoxazole
Acta Crystallographica Section E: Crystallographic Communications, 2017 The title compound, C12H15NO3S, was prepared by 1,3-dipolar cycloaddition of 3,4-dihydro-2H-pyrrole 1-oxide and phenyl vinyl sulfone. In the molecule, both fused five-membered rings display a twisted conformation.
Yaiza Hernández +4 more
doaj +1 more source
Functional degradable polymers by radical ring-opening copolymerization of MDO and vinyl bromobutanoate : synthesis, degradability and post-polymerization modification [PDF]
, 2015 The synthesis of vinyl bromobutanoate (VBr), a new vinyl acetate monomer derivative obtained by the palladium-catalyzed vinyl exchange reaction between vinyl acetate (VAc) and 4-bromobutyric acid is reported.
Bell, Craig A. +3 more
core +3 more sources
Small Science, EarlyView.A [4 + 2] photocycloaddition of aryl cyclobutyl amines on carbon nanotubes is presented. A photocatalyst oxidizes the cyclic moiety to generate an active species trapped by the nanotube π‐cloud. The method functionalizes nanotubes of different characteristics and is tolerant to different functional groups decorating the amine.
Giacomo De Crescenzo +4 more
wiley +1 more source
Diethyl 4-acetyl-5-(2-nitrophenyl)pyrrolidine-2,2-dicarboxylate
Acta Crystallographica Section E, 2010 The title compound, C18H22N2O7, was synthesized by the 1,3-dipolar cycloaddition reaction of but-3-en-2-one, diethyl 2-aminomalonate and 2-nitrobenzaldehyde. In the molecule, the pyrrolidine ring possesses an envelope conformation.
Long He
doaj +1 more source