Patent ID: 11884639
Assignee: SHANDONG JINGBO AGROCHEMICALS TECHNOLOGY CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 8:
9. The preparation method for the high optical indoxacarb intermediate (2S)-5-chloro-2,3-dihydro-2-hydroxy-1-oxo-1H-indene-2-carboxylic acid methyl ester according to claim 2, wherein the oxidant is tert-butyl hydroperoxide or m-chloroperbenzoic acid or cumyl hydroperoxide; in terms of the mole ratio of pure matter, the oxidant to 5-chloro-2-methoxycarbonyl-1-indanone ester is 1:1.2-3; an added dosage of catalyst A or catalyst B is 1%-5% of the mass of 5-chloro-2-methoxycarbonyl-1-indanone ester; in the 5-chloro-2-methoxycarbonyl-1-indanone ester in toluene solution, a dosage of toluene is 2-4 times of the weight of 5-chloro-2-methoxycarbonyl-1-indanone ester.