Dihydrooxadiazinones and method for making

Dihydrooxadiazinones of the formula, ##STR14## where "a" is an integer equal to 1 or 2, and when "a" is 1, R.sup.3 is a monovalent radical and when "a" is 2, R.sup.3 is a divalent radical, and R.sup.3 is selected from the class consisting of aryl radicals selected from the class consisting of tolyl, xylyl and naphthyl, halogenated aryl radicals selected from the class consisting of halophenyl, halotolyl, haloxylyl and halonaphthyl, alkoxy aryl radicals selected from the class consisting of alkoxy phenyl, alkoxy tolyl, alkoxy xylyl and alkoxy naphthyl, nitroaryl radicals selected from the class consisting of nitro phenyl, nitro tolyl, nitro xylyl and nitro naphthyl, sulfoaryl radicals selected from the class consisting of sulfo phenyl, sulfo tolyl, sulfo xylyl and sulfo naphthyl, arylene radicals and halogenated arylene radicals.