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Base catalysed photochemically induced hydrogen isotope exchange in o-methylbenzophenone (1993)

Michalak, Jacek ; Wolszczak, Marian ; Gȩbicki, Jerzy

Chichester : Wiley-Blackwell

Journal of Physical Organic Chemistry 6 (1993), S. 465-470

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ISSN: 0894-3230

Keywords: Organic Chemistry ; Physical Chemistry

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Physics

Notes: Photochemically induced hydrogen-deuterium and hydrogen-tritium exchange between o-methylbenzophenone and labelled methanol is shown to be catalysed by sodium carbonate. Both the (E) and (Z)-photoenols participate in the exchange reaction whereas in absence of the catalyst only the (E)-photoenol is reactive. Analysis of the measured quantum yields for hydrogen isotope exchange reaction allowed the determination of the relative population of transient photoenols and to its comparison with that obtained from the flash photolysis experiments. Both hydrogen kinetic and solvent isotope effects are discussed.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/poc.610060804

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