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:
Mar. 16, 2004
Filed:
Jul. 03, 2002
Applicant:
Inventors:
Dae Whang Kim, Daejeon, KR;
Hae Sung Chang, Daejeon, KR;
Young Kwan Ko, Daejeon, KR;
Jae Wook Ryu, Daejeon, KR;
Jae Chun Woo, Daejeon, KR;
Dong Wan Koo, Daejeon, KR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 6/500 ; C07C / ; C07D / ;
U.S. Cl.
CPC ...
C07C 6/500 ; C07C / ; C07D / ;
Abstract
The present invention relates to a preparing method of 2-phenylalkanoic acid derivatives and more particluarly, to the preparing method of 2-phenylalkanoic acid derivatives expressed by formula (1) from 5,6-dihydro-2(4H)-benzofuranone as a starting material in the presence of a catalyst, organic acid alkali metal salt, in a mild condition, wherein R prepresents benzoyl, naphthoyl, nicotinoyl, furoyl or thenoyl group; and R prepresents a hydrogen atom or C -C alkyl group.