method for production of new triazine diones and their implementation - 2.4 - and isecticides

摘要

Cpds. of formula (I) are prepd. by reacting a bis-silylated amide of formula (II) with an isocyanate RNCO (where R is 1-6C alkyl, 5-6C cycloalkyl, phenyl opt. substd. by halogen, NO2 or lower alkyl, or naphthyl; and R1 is H or 1-4C alkyl). (I: R is not Me) are new. (I) have insecticidal, acaricidal activity. In an example, (I; R = Ph, R1 = H) is prepd. by reacting bis(trimethylsilyl)-formamide with phenyl isocyanate in ether.