A process is described for preparing 4-methylpyrimidine by reacting a 4,4-dialkoxy-2-butanone with a formamidine salt, optionally in the presence of a solvent or diluent, at temperatures of from 80 to 180\xb0 C. In particular, said solution is designed to react with said ruthenium silicide film such that water-soluble reaction products are formed. The anchor links provide ease of anchoring system assembly in the field and retain the bottom of the arresting net in proper position prior to engagement of the arresting net by an aircraft overrunning the runway. When the black sporting powder is ignited, the gas container is forced against the knife blade, rupturing the tank. In this manner, the edge routers may forward packets requiring one or more desired services to service routers configured to perform such services. The toothed wheel is in a driving connection with the at least one annular pinion by means of intermediate wheels.