引用本文:
姚日生, 尤亚华, 邓胜松, 翟林峰. 磺酰脲类除草剂噻磺隆的非光气法合成[J]. 应用化学,
2002, 19(7): 687-689.
Citation: YAO Ri-Sheng, YOU Ya-Hua, DENG Sheng-Song, ZHAI Lin-Feng. Synthesis of Thifensulfuron Using Bis(trichloromethyl) carbonate[J]. Chinese Journal of Applied Chemistry, 2002, 19(7): 687-689.
Citation: YAO Ri-Sheng, YOU Ya-Hua, DENG Sheng-Song, ZHAI Lin-Feng. Synthesis of Thifensulfuron Using Bis(trichloromethyl) carbonate[J]. Chinese Journal of Applied Chemistry, 2002, 19(7): 687-689.
磺酰脲类除草剂噻磺隆的非光气法合成
English
Synthesis of Thifensulfuron Using Bis(trichloromethyl) carbonate
Abstract:
Thifensulfuron was synthesized in two steps by reacting bis(trichloromethyl) carbonate(BTC) as a phosgene substitute with 2-methoxycarbonyl-3-aminosulfonylthiophene(AST) to give an intermediate sulfonylisocynate, which reacted with 2-amino-4-methoxy-6-methyl-1,3,5-triazine to give thifensulfuron. The optimum reaction conditions were n(AST):n(BTC)=1:0.56, reaction temperature 120~130℃ and reaction time (11±0.5) h. The purity of thifensulfuron obtained was 96.5%(HPLC) in overall yield 93%.
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Key words:
- bis(trichloromethyl) carbonate
- / thiophenesulfonylurea
- / synthesis
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