Stable insecticide compositions and methods for producing same
View Patent ↗Insect controlling compositions including an N-substituted (6-haloalkylpyridin-3-yl)alkyl sulfoximine compound exhibiting increased stability, along with methods for preparing same, are disclosed.
1. A method, comprising:
providing a composition including a stereoisomeric mixture of a compound having the following structure:
wherein
the mixture is defined by a first pair of diastereomers and a second pair of diastereomers, the first pair of diastereomers being defined by {(R)-1-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(R)-(methyl)oxido-λ 4 -sulfanylidenecyanamide and {(S)-1-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(S)(methyl)oxido-λ 4 -sulfanylidenecyanamide and the second pair of diastereomers being defined by {(R)-1-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(S)-(methyl)oxido-λ 4 -sulfanylidenecyanamide and {(S)-1-[6-(triflouromethyl)pyridin-3-yl]ethyl}-(R)-(methyl)oxido-λ 4 -sulfanylidenecyanamide; and
heating the composition to convert at least a portion of the second pair of diastereomers to the first pair of diastereomers.
2. The method of claim 1 , wherein the heating is performed at a minimum of about 50 ° C. from about four to about seventy two hours.
3. The method of claim 1 , wherein the composition includes a spinosyn selected from the group consisting of spinetoram, spinosad and mixtures thereof.