Reaction of fluoronitrobenzenes with tetramethylguanidine in acetonitrile

Products of the reaction between the three fluorinated nitrobenzenes (2,3,4 ,6-tetrafluoronitrobenzene, 2,3,4,5-tetrafluoronitrobenzene, pentafluoronit robenzene) and tetramethylguanidine in acetonitrile were isolated and ident ified by analytical and spectroscopic methods. As the result of these react ions, ortho and pai-a substituted isomers were formed. In two of the reacti ons, the para isomers were the main products. The kinetics and the mechanis m of these reactions are discussed. (C) 1999 Elsevier Science B.V. All righ ts reserved.