Trimethylchlorosilane and water. Convenient reagents for the regioselective hydrochlorination of olefins
The hydrochlorination of a series of simple and functionalized olefins in high yields was readily accomplished using a mixture of trimethylchlorosilane and water. Hydrochlorination by this procedure is chemoselective and regioselective.
Boudjouk, Philip,Kim, Beon-Kyu,Han, Byung-Hee
p. 3479 - 3484
(2007/10/03)
MECHANISMS OF FREE-RADICAL REACTIONS. XXIV. QUANTITATIVE DESCRIPTION OF THE POLAR EFFECTS OF SUBSTITUENTS ON THE KINETICS OF THE FREE-RADICAL CHLORINATION OF ALIPHATIC COMPOUNDS BY N-CHLOROPIPERIDINE
The free-radical chlorination of 1-substituted alkanes with electron-withdrawing substituents by N-chloropiperidine in trifluoroacetic acid was studied by the method of competing reactions, and the relative rate constants were obtained for all positions of the substrates.The data on the position selectivity can be described satisfactorily by means of an electrostatic model of the polar effect of the substituent, calculated according to the Kirkwood-Westheimer equation.The obtained characteristics of the electrostatic effect can be successfully applied to calculation of the substrate selectivity and the intermolecular relative rate constants for all the positions, beginning with the third.The Taft equation is unsuitable for description of the effect of substituents on the reaction rate.
Dneprovskii, A. S.,Mil'tsov, S. A.,Arbuzov, P. V.
p. 1826 - 1835
(2007/10/02)
OXIDATIVE CHLORINATION OF ALKANONITRILES IN THE SYSTEM Na2S2O8 - CuCl2
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Troyanskii, E. I.,Svitan'ko, I. V.,Ogibin, Yu. N.,Nikishin, G. I.
p. 2090 - 2094
(2007/10/02)
Convenient thermal sources of β-cyanoalkyl radicals from α-hydroxydiazenes
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Nazran, Avtar S.,Warkentin, John
p. 236 - 237
(2007/10/02)
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