发明名称 |
PROCESS FOR PRODUCING 4-AZIDOSULFONYLPHTHALIC ANHYDRIDE |
摘要 |
The present disclosure provides a process for the production of 4-azidosulfonylphthalic anhydride. In an embodiment, a process is provided and includes chlorinating 4-sulfophthalic acid trisodium salt (1), under solvent reaction conditions, to form a dissolved 4-chlorosulfonylphthalic anhydride (2) and an insoluble sodium chloride. The process includes first removing the insoluble sodium chloride from the dissolved 4-chlorosulfonylphthalic anhydride to form an isolated 4-chlorosulfonylphthalic anhydride. The process includes reacting, under solvent reaction conditions, the isolated 4-chlorosulfonylphthalic anhydride with sodium azide to form a dissolved 4-azidosulfonylphthalic anhydride and an insoluble sodium chloride. The process includes second removing the insoluble sodium chloride from the dissolved 4-azidosulfonylphthalic anhydride to form an isolated 4-azidosulfonylphthalic anhydride. The process includes retrieving a solid 4-azidosulfonylphthalic anhydride (3) from the isolated 4-azidosulfonylphthalic anhydride. |
申请公布号 |
WO2016109389(A1) |
申请公布日期 |
2016.07.07 |
申请号 |
WO2015US67597 |
申请日期 |
2015.12.28 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
JANSMA, MATTHEW, J.;GULLO, MICHAEL, F.;HULL, JOHN, W. |
分类号 |
C07D307/89 |
主分类号 |
C07D307/89 |
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