Synthesis and herbicidal activities of novel 3-(substituted benzyloxy or phenoxy)-6-methyl-4-(3-trifluoromethylphenyl)pyridazine derivatives |
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| Authors: | Xu Han Zhu You-Quan Zou Xiao-Mao Liu Bin Wang Yong Hu Fang-Zhong Yang Hua-Zheng |
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| Institution: | State Key Laboratory of Elemento-organic Chemistry, Research Institute of Elemento-organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Nankai University, Tianjin, China. |
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| Abstract: | BACKGROUND: 4‐(3‐Trifluoromethylphenyl)pyridazine represents a new series of compounds with bleaching and herbicidal activities. RESULTS: A total of 43 novel 3‐(substituted benzyloxy or phenoxy)‐6‐methyl‐4‐(3‐trifluoromethylphenyl)pyridazine derivatives were synthesised, and their bleaching and herbicidal activities were evaluated through Spirodela polyrrhiza and greenhouse tests. Some compounds exhibited excellent herbicidal activities, even at a dose of 7.5 g ha?1. CONCLUSION: The results showed that a substituted phenoxy group at the 3‐position of the pyridazine ring and the electron‐withdrawing group at the para ‐position on the benzene ring were essential for high herbicidal activity. Copyright © 2011 Society of Chemical Industry |
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| Keywords: | 3‐trifluoromethylphenyl pyridazine herbicidal activity bleaching activity synthesis |
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