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1. WO2020132820 - SYNTHESIS METHOD FOR 3-(BENZYLOXY)-4-OXO-4H-PYRAN-2-CARBOXYLIC ACID

Publication Number WO/2020/132820
Publication Date 02.07.2020
International Application No. PCT/CN2018/123144
International Filing Date 24.12.2018
IPC
C07D 309/40 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
309Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
34having three or more double bonds between ring members or between ring members and non-ring members
36with oxygen atoms directly attached to ring carbon atoms
40Oxygen atoms attached in positions 3 and 4, e.g. maltol
CPC
C07D 309/40
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
309Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
34having three or more double bonds between ring members or between ring members and non-ring members
36with oxygen atoms directly attached to ring carbon atoms
40Oxygen atoms attached in positions 3 and 4, e.g. maltol
Applicants
  • 广东莱佛士制药技术有限公司 GUANGDONG RAFFLES PHARMATECH CO., LTD [CN]/[CN]
Inventors
  • 叶伟平 YE, Weiping
  • 周章涛 ZHOU, Zhangtao
  • 费安杰 FEI, Anjie
  • 谢阳银 XIE, Yangyin
  • 习林刚 XI, Lingang
Agents
  • 广州粤高专利商标代理有限公司 YOGO PATENT & TRADE MARK AGENCY LIMITED COMPANY
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) SYNTHESIS METHOD FOR 3-(BENZYLOXY)-4-OXO-4H-PYRAN-2-CARBOXYLIC ACID
(FR) PROCÉDÉ DE SYNTHÈSE D'ACIDE 3-(BENZYLOXY)-4-OXO-4H-PYRAN-2-CARBOXYLIQUE
(ZH) 一种3-(苄氧基)-4-氧代-4H-吡喃-2-羧酸的合成方法
Abstract
(EN)
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.
(FR)
L'invention concerne un procédé de synthèse de l'acide 3-(benzyloxy)-4-oxo-4H-pyran-2-carboxylique. L'acide a de l'alcool furfurylique en tant que matière première et est préparé en quatre étapes : réarrangement, addition, protection et oxydation hydroxyle.
(ZH)
一种3-(苄氧基)-4-氧代-4H-吡喃-2-羧酸的合成方法,以糠醇为起始原料,经过重排、加成、羟基保护、氧化四步反应制备得到。
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