Details for Patent: 7,605,260

Title:	Process for producing imide compound
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): ##STR00001## or an enantiomer thereof, which comprises treating a compound of the formula (1): ##STR00002## or an enantiomer thereof with an aqueous hydrochloric acid solution in a hydrophilic solvent, followed by crystallizing the resultant.
Inventor(s):	Kakiya; Yuzo (Ibaraki, JP), Oda; Mayumi (Osaka, JP)
Assignee:	Dainippon Sumitomo Pharma Co., Ltd. (Osaka-Shi, Osaka, JP)
Filing Date:	Jul 27, 2004
Application Number:	10/565,105
Claims:	1. A process for producing an imide compound hydrochloride of the formula (2): ##STR00008## or an enantiomer thereof, which comprises treating a compound of the formula (1): ##STR00009## 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). 2. The process for producing the imide compound hydrochloride according to claim 1, wherein the aqueous hydrochloric acid solution is a 3.0-5.0% aqueous hydrochloric acid solution.