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:
Sep. 15, 2026
Filed:
Jan. 09, 2023
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Sang Weon Roh, Daejeon, KR;
Byung Soo Kang, Daejeon, KR;
Min Su Hwang, Daejeon, KR;
Jeong Ae Yoon, Daejeon, KR;
Won Jae Lee, Daejeon, KR;
Su Jeong Kim, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 327/04 (2006.01); C07C 327/36 (2006.01);
U.S. Cl.
CPC ...
C07D 327/04 (2013.01); C07C 327/36 (2013.01);
Abstract
A manufacturing method capable of improving the yield and properties of a cyclic sulfonic acid ester derivative compound includes (A) reacting a compound represented by Formula 1 and thioacetic acid to prepare a compound represented by Formula 2, and (B) subjecting the compound represented by Formula 2 to an oxidative cyclization reaction to prepare a compound represented by Formula 3: