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The solid-state reaction of isotope exchange of l -alanine ( l -Ala) with spillover-hydrogen activated on a Rh(Pd)-supported catalyst was studied. The reactivity of the carbon atoms and the activation energies of isotope exchange of the hydrogen at the C(2) and C(3) atoms of the l -Ala molecule...
New di- o -quinones of the biphenyl series, namely, 2,2′-dialkyl-5,5′-di- tert -butylbiphenyl-3,4,3′,4′-diquinones, were synthesized. Their structures were established by IR and NMR spectroscopy. The molecular structure of 2,2′-dimethyl-5,5′-di- tert...
Kinetics of the decay of the transient radicals formed from 2,2,4,6-tetramethyl-1,2-dihydroquinoline (TMQ) in aqueous and micellar solutions of sodium dodecyl sulfate were studied by flash photolysis as a function of pH. In aqueous and micellar solutions of TMQ the mechanism of the decay of the...
Reactions of 2-(imidazol-1-yl)-perfluoro-5,5-dimethyl-4-ethylidene-2-thiazoline with a series of secondary amines in THF resulted in the replacement of the imidazole moiety by the amine moiety.
2-Benzoyloxy-2-phenylmalononitrile is formed instead of the expected oxime tosylate in the reaction of hydroxyiminoacetophenone with p -toluenesulfonyl chloride. The structure of the product was confirmed unambiguously by X-ray diffraction analysis.
The data on the molecular design, spectral properties, photochemistry and complexation of photochromic crown ethers containing a C=C bond are described systematically and generalized. Prospects for the practical application of these compounds are considered.
The reaction of dimethyldioxirane with cumene (22–52°C) follows a chain-radical mechanism. The kinetic regularities of this reaction were studied by the chemiluminescence and kinetic UV spectrophotometry methods by monitoring the consumption of dioxirane. The process is inhibited by oxygen. In...
Chemiluminescence (CL) accompanying the decomposition of dispiro(diadamantane-1,2-dioxetane) ( 1 ) in acetonitrile solutions of Eu III , Gd III , Tb III , Pr III , and Ce III perchlorates was studied. In the presence of Eu III , Tb III , and Pr III ions, the chemiluminescence spectra contain the...
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