- Oxidation of 2-methoxy-3,6-dichloropropenylbenzene with ozone
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Oxidation of 2-methoxy-3,6-dichloropropenylbenzene with ozone in acetic acid and carbon tetrachloride was studied.
- Safiullin,Enikeeva
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- A 3,6-dichloro-2-methoxybenzoic acid synthesis method
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The invention relates to a method for synthesizing and preparing a herbicide 3,6-dichloro-2-methoxy benzoic acid (namely dicamba). The method comprises the following steps: (1) formylating 2,5-dichloroanisole, so as to obtain 2-methoxy-3,6-dichloroanisole; and (2) oxidizing 2-methoxy-3,6-dichloroanisole; and acidifying, filtrating and drying a reaction product, thus obtaining a product. According to the method disclosed by the invention, the product yield is high, high-pressure carboxylation reaction is not adopted, the problem in the existing production processes that the emission of waste gases, waste water and waste residues is high is solved, the environmental-friendly benefit is good, and the industrialization is easy, so that the method has a relatively good application value.
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Paragraph 0024; 0025
(2017/03/08)
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- NON-SYSTEMIC TGR5 AGONISTS
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Compounds of structure (I), or a stereoisomer, tautomer, pharmaceutically acceptable salt or prodrug thereof, wherein R1, R2, R3, R4, R8, R9, R10, R11, R12, A1, A2, X, Y and Z are as defined herein. Uses of such compounds as TGR5 antagonists and for treatment of various indications, including Type II diabetes meletus are also provided.
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Page/Page column 226
(2013/07/05)
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