Web17 mei 2007 · Lithium Cuprate Coupling Reactions: Evaluation of Computational Methods for Determination of the Reaction Mechanisms. The Journal of Physical Chemistry A 2010, 114 ... Organocuprate Conjugate Addition: Structural Features of Diastereomeric and Supramolecular π-Intermediates. Journal of the American Chemical Society 2008, 130 ... Vinyl and aryl Grignard reagents couple with primary alkyl halides in the presence of a catalytic amount of a copper(I) halide salt. The use of Li2CuCl4 rather than simple copper(I) halide salts (CuX) improves yields of these coupling reactions. (5) The addition of Grignard reagents to alkynes is facilitated by a catalytic amount of copper halide…
Lithium Cyano(methyl)cuprate - Marino - Major Reference Works …
Web8 jan. 2001 · Scheme 4. In conclusion, lithium bis (methylenecyclopropyl) cuprate adds cleanly to enones and provides a simple route to highly substituted methylenecyclopropyl ketones, which have not previously been readily accessible. The cyclisation of such ketones using Lewis acids has been examined and this extends the scope of this methodology for … WebAbstract. Lithium, sodium and potassium nitrate-containing Li 2 CuO 2 samples were prepared to analyze the CO 2 capture process at moderate temperatures, using different … graphical shapes
Theoretical Studies on the Addition of Polymetallic Lithium ...
Web11 apr. 2024 · Intertwined spin and charge orders have been widely studied in high-temperature superconductors, since their fluctuations may facilitate electron pairing; however, they are rarely identified in ... WebLithium alkyls and aryls add to the ester carbonyl group to give either an alcohol or an olefin. Lithium dimethyl cuprate has been used to prepare ketones from esters (41). Tebbe s reagent, Cp2TiCH2AlCl (CH2)2, where Cp = clyclopentadienyl, and other metal carbene complexes can convert the C=0 of esters to C=CR2 (42,43). [Pg.389] WebAb initio and density functional theoretical investigations into the nature of the reaction of acetylene with noncluster organocuprate reagents, MeCu, Me2Cu-, and lithium organocuprate cluster reagents, Me2CuLi, Me2CuLi·LiCl, and (Me2CuLi)2 were carried out, and the function of the mixed metal cluster was probed. Intermediates transition … graphical sigmet