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Start Over Author "Richard W. Johnson" Journal journal of the american chemical society
7 results on '"Richard W. Johnson"'

6. Entropic control of the photochemical reactivity of alkyl phenyl ketones

Author

Frederick D. Lewis, Richard W. Johnson, and Daniel R. Kory

Subjects
chemistry.chemical_classification, Baker–Nathan effect, Colloid and Surface Chemistry, Chemical reaction kinetics, chemistry, Physical organic chemistry, Organic chemistry, Photochemical reactivity, General Chemistry, Biochemistry, Chemical reaction, Catalysis, Alkyl
Published
1973
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7. The possibility of SN2 reactions at nitrogen. Catalytic hydrogen-deuterium exchange in a melt

Author

Eric R. Holm and Richard W. Johnson

Subjects
Isotope, Inorganic chemistry, Kinetics, chemistry.chemical_element, General Chemistry, Biochemistry, Nitrogen, Catalysis, Chemical kinetics, chemistry.chemical_compound, Colloid and Surface Chemistry, chemistry, Deuterium, Physical chemistry, Lithium, Ammonium
Abstract

In order to explain the H/sub 2/ and D/sub 2/ produced in the reaction of lithium deuteride and ammonium trifluoroacetate in a melt, an S/sub N/2-type reaction occurring at a quaternary nitrogen was previously proposed. Present experimental results indicate that the H/sub 2/ and D/sub 2/ result from catalytic isotope exchange of HD in a reaction which is highly dependent on melt conditions. (JSR)

Published
1977
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