PROCESS FOR PRODUCING IMIDE COMPOUND

摘要

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 enatiomer thereof with an aqueous hydrochloric acid solution in a hydrophilic solvent, followed by crystallizing the resultant.