高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (12): 20250187.doi: 10.7503/cjcu20250187

• 有机化学 • 上一篇    下一篇

除草剂烯草酮关键中间体的连续化合成工艺

任世伦1, 黄城1, 陈见爱1, 李蜜蜜1, 马景瑞3, 袁其亮2(), 谭成侠1()   

  1. 1.浙江工业大学化学工程学院,杭州 310014
    2.浙江中欣氟材股份有限公司,绍兴 312369
    3.上海嘉胜石油化工有限公司,南京 210012
  • 收稿日期:2025-07-07 出版日期:2025-12-10 发布日期:2025-08-05
  • 通讯作者: 谭成侠 E-mail:yuanqiliang@126.com;tanchengxia@zjut.edu.cn
  • 作者简介:袁其亮, 男, 博士, 正高级工程师, 主要从事含氟精细化学品合成工艺研发与产业化方面的研究. E-mail: yuanqiliang@126.com
  • 基金资助:
    一帆生物科技集团股份有限公司资助项目(KYY-HX-20240994)

Continuous Synthesis Process of Key Intermediates for the Herbicide Clethodim

REN Shilun1, HUANG Cheng1, CHEN Jianai1, LI Mimi1, MA Jingrui3, YUAN Qiliang2(), TAN Chengxia1()   

  1. 1.College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China
    2.Zhejiang Zhongxin Fluorine Material Co. Ltd. ,Shaoxing 313269,China
    3.Shanghai Jiasheng Petrochemical Co. Ltd. ,Nanjing 210012,China
  • Received:2025-07-07 Online:2025-12-10 Published:2025-08-05
  • Contact: TAN Chengxia E-mail:yuanqiliang@126.com;tanchengxia@zjut.edu.cn
  • Supported by:
    the Programe of Yifan Bio-Tech Group Co. Ltd., China(KYY-HX-20240994)

摘要:

烯草酮具有高效、 低毒、 杀草谱广、 施用期长以及对后茬作物安全等特点, 已成为环己烯酮类除草剂的代表性品种. 5-[2-(乙硫基)-丙基]-2-丙酰基-3-羟基-2-环己烯-1-酮(简称精三酮)作为烯草酮的关键中间体, 其传统间歇式合成工艺存在反应效率低、 能耗较大等问题. 本文基于微通道连续流技术, 开发了关键步骤的连续化合成工艺. 通过优化环合与水解步骤, 将反应时间从90 min缩短至4.8 min, 产物收率达65.2%, 纯度为95.2%. 该工艺显著提升了反应效率和产物质量, 为烯草酮的工业化生产提供了新方法.

关键词: 除草剂, 烯草酮, 微通道连续流技术, 合成工艺

Abstract:

Clethodim, known for its high efficacy, low toxicity, broad herbicidal spectrum, extended application window and safety to subsequent crops, has become a representative cyclohexenone herbicide. 5-[2-(Ethylthio) propyl]-2-propionyl-3-hydroxy-2-cyclohexen-1-one(abbreviated as Jing-Santong), a key intermediate of clethodim, faces challenges in traditional batch synthesis, such as low reaction efficiency and high energy consumption. This study developed a continuous-flow microchannel technology for the critical synthesis steps. By optimizing the cyclization and hydrolysis processes, the reaction time was reduced from 90 min to 4.8 min, achieving a 65.2% yield and 95.2% purity. The novel process significantly improves reaction efficiency and product quality, offering a promising approach for the industrial production of clethodim.

Key words: Herbicide, Clethodim, Microchannel continuous flow technology, Synthesis process

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