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Citation: LIU Hui, WANG Hong-Qing, LIU Zhao-Jie. Synthesis and Herbicidal Activities of Pyrazolo [3,4-d] pyrimidin-4-one Derivatives[J]. Chinese Journal of Applied Chemistry, ;2005, 22(3): 286-290. shu

Synthesis and Herbicidal Activities of Pyrazolo [3,4-d] pyrimidin-4-one Derivatives

1.
a College of Chemistry, Central China Normal University, Wuhan 430079;
2.
b College of Chemistry & Chemical Engineering, Nanhua University, Hengyang

Corresponding author: LIU Zhao-Jie,
Received Date: 21 May 2004
Available Online: 9 August 2004
Fund Project: 科技部国家"九五"重点攻关项目(975630205) (975630205)

1-Phenyl-3-methylthio (methanesulfonyl)-5-substituted aryl 6-(4-(2-alkoxy carbonyl) ethoxy) phenoxypyrazolo [3,4-d] pyrimidin-4-one derivatives (6 and 7) were synthesized by a tandem aza-Wittig and annulation reaction of iminophosphorance 4 with aromatic isocyanate and substituted phenols.The structures of all the target compounds have been confirmed.The preliminary bioassay tests indicate that compounds 6h,7a,7c possess high herbicidal activities against the roots of rape and barnyard grass.Their inhibitory rates against the roots of rape and barnyard grass are more than 90%.
- pyrazolo [3,4-d] pyrimidinone,
- phenoxyl propionic acid ester,
- aza-Wittig reaction,
- synthesis,
- herbi-cidal activity
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