Efficient synthesis of fused bicyclic ethers and their application in herbicide chemistry.
2014
Abstract A series of triketones 2 and 3 featuring novel fused bicyclic aryl ethers have been prepared. The syntheses utilized ring-closing olefin metathesis (compounds 2 ), or oxidative cyclization of allylphenols as the key steps. The herbicidal activity of the targeted triketones 2 and 3 on various grasses and broad-leaved weeds was determined and compared with compound 1 . The strength of the novel compounds 2 and 3 is their good herbicidal activity on broad-leaved weeds in post-emergent applications, whereas activity on grasses was inferior compared to 1 . In addition, computational methods have been applied to provide a deeper understanding of the SAR found for compounds 2 and 3 .
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