Chemoselectivity of Nitroxylation of Cage Hydrocarbons
Abstract: The composition of reaction mixtures obtained by nitroxylation of 13 cage hydrocarbons with 100% nitric acid and its mixtures with acetic acid, acetic anhydride, and methylene chloride has been studied. More reactive substrates react with lowest
Ivleva, E. A.,Klimochkin, Yu. N.,Leonova, M. V.
p. 1702 - 1710
(2020/12/01)
Colloid and nanosized catalysts in organic synthesis: XII. Hydrogenation of carbonitriles catalyzed by nickel nanoparticles
Hydrogenation of carbonitriles catalyzed by nickel nanoparticles in isopropanol proceeds under atmospheric pressure of hydrogen within 6-15 h to yield mainly secondary amines. Hydrogenation of α-aminonitriles results in reductive decyanation. β-Aminonitriles undergo hydrogenolysis at the nitrogen-carbon bond.
Mokhov,Popov,Shcherbakova
p. 273 - 280
(2016/04/20)
An efficient desulfonylation method mediated by magnesium in ethanol
An extremely convenient desulfonation method of primary, secondary, tertiary alkyl and vinyl phenyl sulfones was developed by using magnesium in ethanol in the presence of catalytic amount of mercuric chloride to give the corresponding alkanes and alkene in almost quantitative yields.
Lee,Choi,Lee,Pak
p. 4541 - 4542
(2007/10/02)
Hydrogenolysis of Alkyl-Substituted Adamantanes, Diamantanes, and Triamantanes in the Gas Phase on a Nickel-Alumina Catalyst
Dealkylation of several alkyladamantanes, diamantanes, and triamantanes has been observed in the gas phase with hydrogen at atmospheric pressure on a 30percent nickel-alumina catalyst.Yield-temperature profiles show that the optimum temperature for obtaining the pure parent compound in high yield can be as low as 215 deg C.The ease of removal of an alkyl substituent depends on whether it is secondary or tertiary on the diamondoid nucleus.Rupture of the diamondoid skeleton requires much higher temperatures (over 280 deg C) than dealkylation.The hydrogenolytic degradation of diamantane to adamantane was examined with the aid of molecular mechanics calculations; likely pathways for C-C bond cleavage were deduced which are consistent with the several intermediates detected experimentally.The mechanism of dealkylation is discussed in terms of steric and thermodynamic factors and the nature of possible surface intermediates.*
Grubmueller, Peter,Maier, Wilhelm F.,Raque Schleyer, Paul von,McKervey, M. Anthony,Rooney, John J.
p. 1989 - 2006
(2007/10/02)
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