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:
Dec. 02, 2025
Filed:
Oct. 18, 2021
Applicant:
Korea Kumho Petrochemical Co., Ltd., Seoul, KR;
Inventors:
Assignee:
KOREA KUMHO PETROCHEMICAL CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 323/16 (2006.01); C07C 315/02 (2006.01); C07C 319/14 (2006.01);
U.S. Cl.
CPC ...
C07C 323/16 (2013.01); C07C 315/02 (2013.01); C07C 319/14 (2013.01);
Abstract
A method of preparing a thiomethylphenol derivative is disclosed, the method including: (a) carrying out a primary reaction of a phenol derivative represented by the following Chemical Formula 2, a mercaptan derivative represented by RSH, and paraformaldehyde at a reaction temperature Tunder conditions in which a heterocyclic base having 3 to 10 carbon atoms and an acid are simultaneously present; and (b) carrying out a secondary reaction at a reaction temperature Tto prepare a thiomethylphenol derivative represented by the following Chemical Formula 1, wherein T<Tis satisfied.