| 超高效除草剂双草醚合成研究 |
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| 引用本文： | 徐振元,金声超,李俊,许丹倩. 超高效除草剂双草醚合成研究[J]. 农药, 2002, 41(6): 15-18 |
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| 作者姓名： | 徐振元 金声超 李俊 许丹倩 |
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| 作者单位： | 浙江工业大学,杭州310014 |
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| 摘 要： | 研究了以硫脲和丙二醛二乙酯为主要起始原料，经缩合、甲基化、氯化、甲氧基化，氧化和缩合反应合成双草醚，在合成溶剂，催化剂，合成和分离方法上均有所改进，特别是最后一步缩合反应中用氢氧化钠代替氢化钠，宜于工业化生产，既有利于安全生产，又降低成本，产品含量95％，以硫脲计双草醚总收率为41％。
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| 关 键 词： | 双草醚 除草剂 合成 硫脲 丙二酸二乙酯 |
| 修稿时间： | 2002-01-24 |
Studies on the Preparation of Super- high Efficient Herbicide of Bispyribac- sodium |
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| Xu Zhenyuan et al.. Studies on the Preparation of Super- high Efficient Herbicide of Bispyribac- sodium[J]. Pesticides, 2002, 41(6): 15-18 |
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| Authors: | Xu Zhenyuan et al. |
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| Abstract: | Bispyribac-sodium was prepared by treatment of thiourea with diethyl malonate, followed by methanation with dimethyl sulfate, chlorination with phosphorous oxychloride, methanation with sodium methoxide, oxidation with hydrogen dioxide and condensation with 2,6-dihydroxybenzoic acid, given the total yield of 41% and the purity of 95%.The procedure for the preparation was improved and discussed in this paper. |
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| Keywords: | bispyribac-sodium herbicide preparation. |
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