abstract |
2,2-Dimethyl-4,5-benzospiro(2,4)-heptane-1-carboxylic acid esters and 2,2-dimethyl-4,5-benzospiro(2,4)hepta-4,6-diene-1-carboxylic acid esters of the formula ##STR1## wherein R 1 and R 2 are each hydrogen or together are a carbon-carbon bond, processes for producing them and their use in combatting pests. |