36797-93-0Relevant articles and documents
Imidazoline herbicides intermediate 2 - alkoxy - 3 - oxo - succinic acid diester synthesis process
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Paragraph 0037; 0038; 0039, (2018/05/24)
The invention discloses a synthesis technology for an imidazolone herbicide intermediate 2-alkoxy-3-oxo-succinic acid diester, and belongs to the technical field of fine chemical engineering technologies. According to the technology, alkoxy acetic ester and oxalic acid diester which serve as raw materials are subjected to a condensation reaction under the action of alkali to prepare the 2-alkoxy-3-oxo-succinic acid diester. Compared with the prior art, operation is easy, and the yield is increased substantially. Solid sodium alcoholate is used for replacing a sodium alcoholate alcoholic solution, the kind of solvent and the usage amount of the solution are reduced, the output of three wastes is reduced, and the preparing method for the 2-alkoxy-3-oxo-succinic acid diester is efficient, economical and environmentally friendly.