Abstract
Paichongding, a novel neonicotinoids pesticide with excellent insecticidal activity against imidacloprid‐resistant brown planthopper, has been sold in the Chinese market as new pesticide. [14C]Paichongding was proposed as a tracer to support the further study to elucidate the metabolism of the commercialized pesticide. This paper describes an efficient synthesis of [14C]paichongding in five radiochemical steps from [14C]nitromethane (1). Then the four diastereoisomers (a, b, c, and d) were separated by preparative chiral HPLC and characterized by HPLC and HPLC‐LSC. This methodology could be utilized in the syntheses of other 14C‐labeled nitromethylene neonicotinoids derivatives. Copyright © 2011 John Wiley & Sons, Ltd.
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