Synthesis and herbicidal activity of novel α,α,α‐trifluoro‐m‐tolyl pyridazinone derivatives
Pest Management Science2006Vol. 62(6), pp. 522–530
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Han Xu, Xiao‐Mao Zou, You‐Quan Zhu, Bin Liu, Hanlin Tao, Xu‐Hong Hu, Haibin Song, Fang‐Zhong Hu, Yong Wang, Huazheng Yang
Abstract
A series of novel alpha,alpha,alpha-trifluoro-m-tolyl pyridazinone derivatives was synthesised. Herbicidal activities of the two intermediate compounds and 15 pyridazinone derivatives were evaluated through barnyardgrass and rape cup tests and Spirodela polyrrhiza (L.) Schleiden tests. Selected compounds were also evaluated under greenhouse conditions. Bleaching activities were observed at 10 microg ml(-1) and some compounds exhibited herbicidal activities at a rate of 300 g ha(-1). The relationship between crystal structures and herbicidal activities is discussed through a comparison of two compounds (5a and 5f).
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