Novel 3-(1,2-propadienyl)-cyclopropane-carboxylates of the formula ##STR1## wherein R is alcohol used in pyrethrinoid synthesis, X and Y are both hydrogen or individually halogen or X is hydrogen or halogen and Y is alkyl of 1 to 18 carbon atoms or halogen or X is hydrogen or halogen or alkyl of 1 to 18 carbon atoms and Y is --COOR' or --CN or ##STR2## R' is alkyl of 1 to 18 carbon atoms, R.sub.2 and R.sub.3 are individually hydrogen or alkyl of 1 to 18 carbon atoms or R.sub.2 and R.sub.3 together with the nitrogen atom form a heterocycle having pesticidal properties.