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|Title:||Kinetics of addition of n-butylamine to 4'-substituted N-methyl2-styrylpyridinium iodides|
Thanulingam, T Lekshmana
|Abstract:||The kinetics of addition of n-butylamine to 4'-substituted N-methyl-2-styrylpyridinium iodides in acetonitrile have been followed spectrophotometrlcally. The reaction is first order with respect to the substrate and the order in n-butylamine is non-integral. A mechanism involving the formation of the zwitterionic addition complex in the first equilibrium step with subsequent proton transfer in a slow step is proposed. Structure-reactivity study with various 4'-substituents shows that the rate of proton transfer is accelerated by electron-releasing substituents and retarded by electron-withdrawing substituents.|
|Appears in Collections:||IJC-A Vol.33A(05) [May 1994]|
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