The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2024
Filed:
Mar. 18, 2022
Daikin Industries, Ltd., Osaka, JP;
Atsushi Shirai, Osaka, JP;
Asako Yoshiyama, Osaka, JP;
Makoto Matsuura, Osaka, JP;
Yoshichika Kuroki, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
An object of the present invention is to provide a method for producing a propionic acid derivative with high productivity. The object can be achieved by a method for producing a compound represented by formula (1): wherein Ris a halogen atom or the like, Rand Rare each independently a hydrogen atom, a halogen atom, or an organic group, X is an oxygen atom or a sulfur atom, Rand Rare each independently a hydrogen atom, a halogen atom, or a hydrocarbon group optionally having one or more substituents, Ris a hydrocarbon group optionally having one or more substituents; the method comprising step A of reacting a compound represented by formula (2): with a compound represented by formula (3):M(R), wherein M is a cation, n is an integer corresponding to the valence of M, and a compound represented by formula (4):R—X—H; andstep B of separating, by filtration, the compound represented by formula (5): MFfrom the mixture obtained by the above reaction.