Title:
NOVEL METHOD FOR PREPARING 4'-HYDROXY-4-BIPHENYLCARBOXYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2017/209458
Kind Code:
A1
Abstract:
The present invention relates to a novel method for preparing 4'-hydroxy-4-biphenylcarboxylic acid, which is prepared through a hydrolysis reaction from a compound of R1-COO-Ph-Ph-CO-CR-Y. In the formula: R1 is a C1-6 alkyl, cycloalkyl or aryl group; Ph is phenyl; R is hydrogen or an alkyl group; Y is >N+-(X-); X is a leaving group selected from chloride, bromide, iodide, methanesulfonate, benzenesulfonate and toluenesulfonate; and >N+- is a quaternary amine salt, which is an amine salt comprising three identical or different alkyl groups or aromatic hydrocarbons or a cyclic aromatic amine salt such as pyridine.
Inventors:
LEE SUK-WON (KR)
OH JAE-MIN (KR)
JEONG HYEON-YUN (KR)
LEE WON-JI (KR)
CHO YANG-RAI (KR)
OH JAE-MIN (KR)
JEONG HYEON-YUN (KR)
LEE WON-JI (KR)
CHO YANG-RAI (KR)
Application Number:
PCT/KR2017/005524
Publication Date:
December 07, 2017
Filing Date:
May 26, 2017
Export Citation:
Assignee:
WISCHEM CO LTD (KR)
International Classes:
C07C51/50; C07C65/05; C07C211/63
Foreign References:
US4990660A | 1991-02-05 | |||
JPH07107021B2 | 1995-11-15 | |||
JPH03275641A | 1991-12-06 | |||
US5854245A | 1998-12-29 |
Other References:
CAP???H, ?. T. ET AL.: "??????????????? CT?????? AMMOH?????? CO???, ?????????? PI-X???-? ?-METO??????????????? ????????", X????????? ?????? ???????, vol. 57, no. 3, 2004, pages 41 - 49
Attorney, Agent or Firm:
LEE, Sang-Pil (KR)
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