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US 7,605,260 B2Granted
Process for producing imide compound
AssigneeDainippon Sumitomo Pharma Co., Ltd.
InventorsYuzo Kakiya, Mayumi Oda
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Abstract
The present invention provides an excellent industrial process for producing an imide compound hydrochloride. The process for producing an imide compound hydrochloride of the formula (2): or an enantiomer thereof, which comprises treating a compound of the formula (1): or an enantiomer thereof with an aqueous hydrochloric acid solution in a hydrophilic solvent, followed by crystallizing the resultant.
Claims2
A process for producing an imide compound hydrochloride of the formula (2):
- or an enantiomer thereof,
- which comprises treating a compound of the formula (1):
- or an enantiomer thereof with 1.8 to 5.0% aqueous hydrochloric acid solution in acetone, crystallizing the resultant hydrochloride of the formula (2), and isolating the crystallized hydrochloride of the formula (2).
Dependencies are inferred from the claim text.