The present invention provides method for making a compound of formula 1:comprising the steps of reacting compounds of formulas 2 and 3:to produce a compound of formula 4:wherein R1, R2, R3, R4 and R5 are defined as described herein. The height bar is adjustable horizontally. The method includes the parametering in neighboring cells of the control area of a frequency channel of the network corresponding to a transmission channel of a transmitter associated with the control area.