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zcp19841107

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[交流] 【求助】烯草酮稳定剂的问题已有2人参与

最近看到一篇文献上说烯草酮的稳定剂用到的是氮甲基吡氯烷酮，不知道是什么东西，在网上看到一家有卖的结果还是网页打不开，有没有知道这个稳定剂的。还没有其他常用的烯草酮稳定剂呢？

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1楼 2010-03-29 19:06:33

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cjg820

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zcp19841107(金币+18):十分感谢 2010-04-07 18:21

根据其英文摘要，应该就是N-甲基吡咯烷酮，N-methylpyrrolidone。

Improved method for preparation of clethodim with high yield and purity.    Yu, Guoquan; Yu, Wei; Ji, Zhiyang; Wang, Jianrong.  (Jiangsu Changqing Agrochemical Co., Ltd., Peop. Rep. China). Faming Zhuanli Shenqing Gongkai Shuomingshu  (2009),    4pp.  CODEN: CNXXEV  CN  101575307  A 20091111  Patent  written in Chinese. Application: CN  2009-10033391  20090611.  Priority: .  CAN 152:11880 AN 2009:1418219 CAPLUS

Patent Family Information

Patent No. Kind Date Application No. Date
CN 101575307 A 20091111 CN 2009-10033391 20090611

Priority Application
CN 2009-10033391 20090611

Abstract

The title method comprises adding propanone compd. and a ketone compd. in petroleum ether, stirring, adding allyloxylamine compd., condensing at 25-20, washing with water, and removing solvent at 60-70 to give clethodim with high yield and purity.  The ketone compd. is N-methylpyrrolidone, and its ratio to the propanone compd. is 3-5:100.  With the ketone compd. as stabilization agent, the condensation reaction can be carried out at low temp., thus inhibiting the decompn. of clethodim.  The yield reaches about 97%, and the purity reaches 94%.

[ Last edited by cjg820 on 2010-4-6 at 13:52 ]