ChemInform Abstract: Carbon Carbon Bond Formation und Functional Group Interconversion Using Organoselenium Reagentsorganic chemistry, reviewThis chapter discusses the mechanisms of triorganosilyl-mediated transfers of carbon nucleophiles initiated by Lewis base catalysts. It also interests in several mechanistic...
This includes C-C(sp), C-C(sp(2)), and C-C(sp(3)) single bonds; carbon-carbon double bonds; and carbon-carbon triple bonds, with a focus on catalysis by transition metals or organocatalysts. Additionally, specific topics, such as ring-opening processes involving carbon-carbon bond ...
Compared to pure PAN, F-Ph-CNT/PAN composite films and fibers showed a significant increase of Tg up to 22 °C due to the hydrogen bond and interlocking structure between the F-Ph-CNT and PAN matrix. In addition, DMA analysis showed Acknowledgments This work was supported by a grant from...
Transition metal carbenes with polarised-covalent M = C double bonds have been known for decades, but it was not until 1981 that the first U = C double bond was isolated in the uranium(IV)–carbene complex [U(η5-C5H5)3{C(H)PMe2Ph}]22. After initial advances23,24,25,26,...
The carbon–carbon triple bond (–C≡C–) is an elementary constituent for the construction of conjugated molecular wires and carbon allotropes such as carbyne and graphyne. Here we describe a general approach to in situ synthesize –C≡C– bond on Cu(11
Because carbon canbondin so many different ways, a singlemoleculecan have differentbondingconfigurations. Consider the two molecules illustrated here: C6H14 CH3CH2CH2CH2CH2CH3 C6H14 CH3 I CH3CH2CH CH2CH3 Bothmoleculeshave identical chemicalformulas(shown in the left column); however, their structura...
Four polynuclear cobalt(III)ammine complexes with bridging carboxylic acids containing a carbon–carbon triple-bond have been prepared and characterized. The kinetics of the reduction of the µ-(carboxyacetylemecarboxylato-OO′)-di-µ-hydroxo-bis[triamminecobalt(III)] complex, (I), by CrII ...
Disclosed is a melt-flowable fluoropolymer comprising repeating units arising from (a) tetrafluoroethylene and (b) a monomer having at least one functional group and a polymerizable carbon-carbon double bond, wherein the sum of the weight percent of (a) and (b) comprises at least about 99 ...
(Fig.1f). A hypervalent iodonium moiety56,57,58,59,60,61,62,63could be an appropriate choice for LG, due to its super leaving group ability. Moreover, in alkenyliodonium salts64,65,66,67,68the carbon–carbon bond is activated to accept nucleophiles. A perfect candidate of this reagent ...
The released electrophilic halogen radical then engages in a radical addition to the carbon–carbon double or triple bond, followed by a radical–polar crossover and carbocation trapping by the previously formed halide anion to deliver the desired vicinal dihalides in a redox-neutral manner. This ...