The intermediate cunplex mechanism for aromatic nucleophilic Sub&itution reactions of activated canpounde is indicated by a variety of evidence much of which has been provided by the work of Bunnett and coworkers (1). The concerted SN2 mechanism has continued to have its proponents, however, particu
Kinetic deuterium isotope effect in the reaction of 2,4-dinitrophenyl phenyl ether with piperidine in benzene
โ Scribed by Francesco Pietra
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- French
- Weight
- 239 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0040-4039
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๐ SIMILAR VOLUMES
The competitive reactions of Br atoms with CH, and CD, were studied over the temperature range of 562' to 637ยฐK. Over this temperature interval, the kinetic isotope effect, k,/k,, varied from 3.05 to 2.47 for the reactions Br + CH, -% HBr + CH, The rate constant ratio k,/k, , expressed in Arrhenius
The gerreral scheme of the reaction between ~-or ~'-alky!ated pyridine and quinaldSme l,~ox~des with acetic anhydride can be depicted as sho~m belo~z (2),
## Abstract The kinetic isotope effects in the reaction of methane (CH~4~) with Cl atoms are studied in a relative rate experiment at 298 ยฑ 2 K and 1013 ยฑ 10 mbar. The reaction rates of ^13^CH~4~, ^12^CH~3~D, ^12^CH~2~D~2~, ^12^CHD~3~, and ^12^CD~4~ with Cl radicals are measured relative to ^12^CH~