Abstract: A compound of the formula, ##EQU1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are respectively hydrogen atom or methyl, R.sub.5 is a member of ##SPC1##--CH.sub.2 Z or ##EQU2## wherein R.sub.6 is hydrogen atom or methyl, R.sub.7 is alkenyl, alkadienyl, alkynyl or benzyl, R.sub.8 is hydrogen atom, ethynyl or cyano, R.sub.9 is hydrogen atom, a halogen atom or alkyl, R.sub.10 is a halogen atom, alkyl, alkenyl, alkynyl, benzyl, thenyl, furylmethyl, phenoxy, substituted phenoxy or phenylthio, or R.sub.9 and R.sub.10 are bonded at the ends to form polymethylene chain containing or not containing oxygen or sulfur atom, Y is oxygen atom, sulfur atom or --CH=CH--, n is 1 or 2, Z is phthalimido, thiophthalimido, di- or tetra-hydrophthalimido or dialkylmaleimido, R.sub.11 is phenyl, thienyl or furyl and X is a halogen atom, which is useful as an active ingredient of insecticides.