Abstract:
The activity of an arthropodicidal compound is increased by substituting at least one deuterium atom for a hydrogen atom attached to a carbon in the structure of the compound. Preferred compounds with arthropodicidal activity have the general formula (1) wherein A represents any group which in association with the remainder of the molecule gives arthropodicidal activity and which may contain a deuterium atom in place of any hydrogen atom which is attached to a carbon atom having four separate bonds; Y is O, S, CH 2 , or NH; R' is hydrogen or deuterium, R" is hydrogen, deuterium, -CH, -C≡CH or -C≡CD and R'" is hydrogen or fluorine; provided that the compound contains at least one deuterium atom. Compositions containing them and methods of using and making these compounds, and a deuterated alcohol starting material, are described.