Mechanism of the stereoisomeric conversions of nitroenamines containing a N-H bond in chloroform-methanol mixtures
Physical Chemistry
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Conclusions
- 1.
The Z,E-isomerization of α-nitro-β-methylaminoacrylic ether and α-nitro-β-tolylaminoacrylic ether in a mixture of methanol and chloroform has been studied by dynamic PMR; the activation parameters of the process have been obtained.
- 2.
The nature of the effect of substituents on the rate and energy parameters of Z,E-isomerization, the absence of a kinetic isotope effect, as well as the lower rate of proton exchange indicate that the isomeric transformations take place by a thermal mechanism.
Keywords
Ether Methanol Chloroform Activation Parameter Isotope Effect
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© Plenum Publishing Corporation 1982