abstract |
Compounds of the formula ##STR1## wherein Q is 0 or S, R 1 and R 2 are H, halogen, (halo)alkyl or (halo)alkoxy or together are methylenedioxy, R 3 is isopropyl optionally fluoro-substituted and R 4 are the residues of certain alcohols of the pyrethroid type, are useful as insecticides. |