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Title: Kinetics of addition of n-butylamine to 4'-substituted N-methyl2-styrylpyridinium iodides
Authors: Shunmugasundaram, A
Thanulingam, T Lekshmana
Raj, V
Rajasekar, A
Issue Date: May-1994
Publisher: NISCAIR-CSIR, India
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.
Page(s): 417-419
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.33A(05) [May 1994]

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