Solatenol (STL) is a broad spectrum pyrazole carboxamide which originates from the bezonorbornene amide subclass. STL inhibits succinate dehydrogenase (SDHI) a well known fungicidal mode of action and was first prepared within Syngenta in 2005. Solatenol is a second generation benzonorbornene carboxamide following isopyrazam (IZM), which was mainly designed for the cereals segment. Solatenol has a simplified structure in comparison to IZM (reduced number of stereocenters) and is of broader spectrum. Solatenol has outstanding activity against Asian soy rust and in mixture with azoxystrobin will be sold as Elatus in major soy markets. There are also options in crops outside soybean covering a broad range of diseases. Solatenol has a unique structure containing a benzonorbornene part with a dichloromethylene group in 9-postion of the benzonorbornene ring. The challenging synthesis of STL as well as biological and mode of action aspects will be discussed

Solatenol: A new broad-spectrum SDHI fungicide

248th National Meeting (2014)

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