Many pyrazole derivatives have good bioactivity.In this paper, five new pyrazolylacyloxylalkylphosphonate derivatives have been synthesized by condensation of 4chloro1,3bismethylpyrazole5carboxlic acid...Many pyrazole derivatives have good bioactivity.In this paper, five new pyrazolylacyloxylalkylphosphonate derivatives have been synthesized by condensation of 4chloro1,3bismethylpyrazole5carboxlic acid with relative αhydroxyalkylphosphonates. All compounds synthesized are confirmed by 1H NMR,IR and MS.The synthesis of key intermediate pyrazole carboxlic acid has been studied.展开更多
In order to search for novel agrochemicals with high activity and low toxicity, a series of phosphonate derivatives containing 1,2,3-triazole and thiazole rings were designed and synthesized using 2-chloro-5-（chlorom...In order to search for novel agrochemicals with high activity and low toxicity, a series of phosphonate derivatives containing 1,2,3-triazole and thiazole rings were designed and synthesized using 2-chloro-5-（chloromethyl）- thiazole as the starting material. Their structures were confirmed by IR, ^1H NMR, ^31p NMR, EI-MS or ESI-MS and elemental analyses. The crystal structure of 7a was determined by single crystal X-ray diffraction. Preliminary bioassays indicated that most of the target compounds did not display insecticidal activities, but a fraction of them possessed herbicidal and fungicidal activities to some extent.展开更多
文摘Many pyrazole derivatives have good bioactivity.In this paper, five new pyrazolylacyloxylalkylphosphonate derivatives have been synthesized by condensation of 4chloro1,3bismethylpyrazole5carboxlic acid with relative αhydroxyalkylphosphonates. All compounds synthesized are confirmed by 1H NMR,IR and MS.The synthesis of key intermediate pyrazole carboxlic acid has been studied.
基金Project supported by the National Natural Science Foundation of China （No. 20302002）.
文摘In order to search for novel agrochemicals with high activity and low toxicity, a series of phosphonate derivatives containing 1,2,3-triazole and thiazole rings were designed and synthesized using 2-chloro-5-（chloromethyl）- thiazole as the starting material. Their structures were confirmed by IR, ^1H NMR, ^31p NMR, EI-MS or ESI-MS and elemental analyses. The crystal structure of 7a was determined by single crystal X-ray diffraction. Preliminary bioassays indicated that most of the target compounds did not display insecticidal activities, but a fraction of them possessed herbicidal and fungicidal activities to some extent.
