Hydrochloric Acid → 2,2'-[[(4-formylbenzyl)imino]bis(methylene)]bis(N,N-dimethyl-1H-imidazole-1-sulfonamide)

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Reaction Steps

2,2′-[{[4-(diethoxymethyl)benzyl]imino}bis(methylene)]bis(N,N-dimethyl-1H-imidazole-1-sulfonamide) (International Publication WO 2007/058322 pamphlet, Example 27; 10.0 g), ethyl acetate (100 mL) and 2N hydrochloric acid (100 mL) were added, followed by stirring at room temperature for 3 minutes. The aqueous layer was neutralized with an aqueous saturated sodium carbonate solution, extracted with ethyl acetate and then washed with saturated brine. The organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure to obtain the title compound (7.46 g) having the following physical properties.

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