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Patent Searching and Data


Title:
SYNTHESIS METHOD AND INTERMEDIATE FOR PROTHIOCONAZOLE AND ENANTIOMER THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/010539
Kind Code:
A1
Abstract:
A synthesis method and intermediate for prothioconazole and enantiomer thereof. The method comprises: reacting a hydrazine with a glyoxylic acid to obtain a hydrazono-acetic acid intermediate, and reacting the intermediate with a thiocyanate to obtain a prothioconazole target product. The method is highly selective of reaction areas, generates little by-products, and has a high yield. The method does not have a high equipment requirement and does not need water-free or oxygen-free techniques. The method has simple techniques, generates little gas, liquid, or solid wastes, and is applicable for industrial production.

Inventors:
SHENG QIUJU (CN)
ZHANG ZHIMING (CN)
WANG JUNLIANG (CN)
CHEN BANGCHI (CN)
Application Number:
PCT/CN2017/089955
Publication Date:
January 18, 2018
Filing Date:
June 26, 2017
Export Citation:
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Assignee:
ORIENTAL (LUZHOU) AGROCHEMICALS CO LTD (CN)
International Classes:
C07D249/12
Foreign References:
CN1274347A2000-11-22
CN1274348A2000-11-22
CN1274346A2000-11-22
CN1411450A2003-04-16
CN105949137A2016-09-21
Other References:
See also references of EP 3486236A4
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO.,LTD. (CN)
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