Isotopic exchange of organic hydrogen will reorder the distribution of deuterium and often incorporate external hydrogen.
2.
One of them is kinetic fractionation during hydrocarbon generation while the other is isotopic exchange with surrounding water.
3.
Although isotopic labeling experiments have the advantage of using the smallest perturbation to the reaction system, they are limited by the possibility of isotopic exchange with solvent or other species present in the reaction mixture.
4.
In warm deuterium oxide, 2, 4, 6-trimethylpyrylium salts undergo isotopic exchange of 4-methyl hydrogens faster than for the 2-and 6-methyl groups, allowing the synthesis of regioselectively deuterated compounds.
5.
After beginning of World War II ( 1940 ), Geib went to the chemical industrial complexes Leunawerke and proceeded under the Hartek's direction of the development process production of heavy water by a two-temperature isotopic exchange between hydrogen sulfide and water.
6.
After the beginning of World War II ( 1940 ), Geib went to the chemical industrial complexes Leunawerke and proceeded under the Hartek's direction of the development process production of heavy water by a two-temperature isotopic exchange between hydrogen sulfide and water.
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