KINETIC-STUDY OF THE REACTIONS OF SOME 2-L-3-Y-5-NITROTHIOPHENES WITHPRIMARY AND SECONDARY-AMINES IN BENZENE

The kinetics of the reactions of some 2-L-3-Y-5-nitrothiophenes (L = B r, OC6H5, OC6H4NO2-p; Y = CONH2, CO(2)Me) with n-butylamine, benzylami ne, pyrrolidine and piperidine in benzene at 293.15 K have been studie d with the aim of obtaining an insight into the role played by the ort ho-like substituent (Y) in determining the occurrence and the form of base catalysis. The results obtained have also allowed to gain importa nt information about the interactions between the substituents, the th iophene ring and the reaction centre.