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Title:
SYNTHESIS METHOD FOR 3-(BENZYLOXY)-4-OXO-4H-PYRAN-2-CARBOXYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2020/132820
Kind Code:
A1
Abstract:
Disclosed is a synthesis method for 3-(benzyloxy)-4-oxo-4H-pyran-2-carboxylic acid. The acid takes furfuryl alcohol as a starting material and is prepared with four steps: rearrangement, addition, hydroxyl protection and oxidation.

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Inventors:
YE WEIPING (CN)
ZHOU ZHANGTAO (CN)
FEI ANJIE (CN)
XIE YANGYIN (CN)
XI LINGANG (CN)
Application Number:
PCT/CN2018/123144
Publication Date:
July 02, 2020
Filing Date:
December 24, 2018
Export Citation:
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Assignee:
GUANGDONG RAFFLES PHARMATECH CO LTD (CN)
International Classes:
C07D309/40
Domestic Patent References:
WO1998054138A11998-12-03
Foreign References:
EP0281289A11988-09-07
CN101513402A2009-08-26
CN105481812A2016-04-13
CN107709299A2018-02-16
Other References:
LI, MING ET AL: "Synthesis of Pyromeconic Acid", CHEMICAL WORLD, no. 12, 31 December 2005 (2005-12-31), pages 749 - 751, XP009521753, DOI: 10.19500/j.cnki.0367-6358.2005.12.015
Attorney, Agent or Firm:
YOGO PATENT & TRADE MARK AGENCY LIMITED COMPANY (CN)
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