| abstract |
WHEREIN R1 represents a lower alkyl or cycloalkyl radical, R2 represents hydrogen, a lower alkyl radical, or the phenyl radical, R3 and R4 each represent, independently of each other, a lower alkyl radical, and X represents oxygen or sulfphur, THEIR MANUFACTURE AND THEIR USE FOR THE CONTROL OF INSECTS, NEMATODES, MEMBERS OF THE ORDER Acarina and phytopathogenic fungi. Compounds of the formula |