24、kovnikov additionChemical Properties of AlkenesMechanism of the reaction:ROORRO2RO+HBrROH+BrBr+CH3CH=CH2CH3CHCH2BrCH3CHCH2Br+HBrCH3CH2CH2Br+BrBr+BrBr2CH3CHCH2Br+CH3CHCH2BrCH3CHCH2BrCHCH3CH2BrInitiation:Propagation:Termination:CH3CHBrCH2Alkoxy (烷氧基烷氧基) radical -Hydrogen of alkene ca...
Alkene metathesisCross-metathesisMacrocyclesRing-closing metathesisRing-opening metathesisRuthenium catalystsDuring the last decade or so, the emergence of the metathesis reaction in organic synthesis has revolutionised the strategies used for the construction of complex molecular structures. Olefin metathesis is...
- 《Journal of the American Chemical Society》 被引量: 210发表: 2009年 A quantum chemical and classical transition state theory explanation of negative activation... Examines the energies of the reactants and transitional states of the OH-alkene reaction for substituted ethenes. Use of ab initi...
Chemical‐Reductant‐Free Electrochemical Deuteration Reaction using Deuterium OxidedeuterationD2Oelectrochemistrygraphite feltoxygen evolutionIt's a D゛ll! The first catalyst‐free and chemical‐reductant‐free deuteration of alkene and alkynes was achieved through an electrochemical approach with graphite felt...
The cleavage of alkenes to the corresponding carbonyl products is a widely employed method in organic synthesis, especially to introduce oxygen functionalities into molecules, remove protecting groups and tailor large molecules. Chemical methods available for alkene cleavage include, for instance, ozonolysis...
刊名:Journal of the American Chemical Society 2014年第6期 摘要:Highly chemoselective direct reduction of primary, secondary, and tertiary amides to alcohols using SmI_2/amine/H_2O is reported. The reaction proceeds with C-N bond cleavage in the carbinolamine intermediate, shows ...
2 The relatively small adsorption enthalpy provides a much greater mobility of hydrogen over the catalytic surface, resulting in spillover from the metal nanoparticles to the support, which can then act as a hydrogen reservoir.61,63 Reaction selectivity is governed partly by the concentrations of ...
Chemical modification describes the modification, addition or removal, through chemical reaction, of any of a variety of macromolecules, including proteins and nucleic acids. It refers to the use of chemical reagents in vitro rather than to post-translational modification of biological molecules during ...
3 consists of a Re(CO) 4 unit that is coordinated to the bma ligand in a chelating fashion by the two PPh 2 moieties, with the other Re(CO) 4 unit being π-bound to the alkene bond of the bma ligand. Thermolysis of Re 2(CO) 8(bma) in the presence of added Ni(cod) 2 ...
them the prestigious Nobel Prize in Chemistry in 1950. The Diels–Alder reaction is a [4 + 2] cycloaddition organic reaction, wherein a conjugated diene reacts with a substituted alkene, known as the dienophile, leading to the formation of a substituted cyclohexene, as illustrated in Fig...