Title:
SYNTHESIS METHOD FOR 4,4'-BI-1,3-DIOXOLANE-2,2'-DIONE
Document Type and Number:
WIPO Patent Application WO/2020/224268
Kind Code:
A1
Abstract:
A synthesis method for 4,4'-bi-1,3-dioxolane-2,2'-dione, relating to the technical field of battery electrolyte additives, and comprising: adding an imidazole and tetrahydrofuran to a reactor in an argon atmosphere, cooling same to -5 to 5ºC, starting dropping phosgene, completing the dropping after 0.5 to 1 h, then dropping the mixture to a tetrahydrofuran solution of erythritol at -8 to -15ºC, completing the dropping after 1 to 1.5 h, maintaining the temperature and stirring same for 0.5 to 2 h, and removing the solvent in vacuum to obtain a residue; dissolving the residue in dichloromethane, washing same by using cold water, drying and then concentrating same to obtain a 4,4'-bi-1,3-dioxolane-2,2'-dione crude product, and purifying the crude product to obtain refined 4,4'-bi-1,3-dioxolane-2,2'-dione. According to the present invention, the raw materials used are easy to obtain, and the synthesis method is simple to operate, low in energy consumption, short in reaction time, mild and stable in reaction conditions, and high in product yield, which is up to 94%.
Inventors:
YAN CAIQIAO (CN)
GE JIANMIN (CN)
WANG JUN (CN)
HAO JUN (CN)
ZHANG MIN (CN)
WU LIBIN (CN)
HOU RONGXUE (CN)
GE JIANMIN (CN)
WANG JUN (CN)
HAO JUN (CN)
ZHANG MIN (CN)
WU LIBIN (CN)
HOU RONGXUE (CN)
Application Number:
PCT/CN2019/127304
Publication Date:
November 12, 2020
Filing Date:
December 23, 2019
Export Citation:
Assignee:
SHIJIAZHUANG SUNTEC CHEM CO LTD (CN)
International Classes:
C07D317/34
Foreign References:
| CN1918130A | 2007-02-21 | |||
| GB1147540A | 1969-04-02 |
Other References:
MEINHART ROTH, HENNEN DANIEL, OESTERREICHER ANDREAS, MOSTEGEL FLORIAN, SAMUSJEW ALEKSANDRA, EDLER MATTHIAS, MAIER EUGEN, GRIESSER : "Highly Water-Soluble Alpha-Hydroxyalkylphenone Based Photoinitiator for Low-Migration Applications", MACROMOLECULAR CHEMISTRY AND PHYSICS, vol. 218, no. 14, 18 April 2017 (2017-04-18), pages 1 - 6, XP055751953, ISSN: 1022-1352, DOI: 10.1002/macp.201700022
Attorney, Agent or Firm:
SHIJIAZHUANG YUAN HUI PATENT AGENT FIRM (SPECIAL ORDINARY PARTNERSHIP) (CN)
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