Acetic Acid → HCID 46831175, compound

Participants

Reaction Steps

To a mixture of 0.030 g (0.06 mmole) of 4-(3-chloro-phenyl)-2-[6-(piperidin-4-ylmethoxy)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid amide (I.23), 0.0095 mL (0.13 mmole) of 37% aqueous formaldehyde solution, 0.0041 mL (0.070 mmole) of acetic acid and 2.1 mL of methanol-dichloromethane (2:5) was added 0.019 g (0.090 mmole) of sodium triacetoxyborohydride. The mixture was stirred at room temperature for 18 hours and then concentrated under reduced pressure. The residue was diluted with dichloromethane and ethyl acetate, washed with aqueous 1M sodium hydroxide solution and brine, dried over anhydrous magnesium sulfate, filtered, and concentrated under reduced pressure. The residue was recrystallized from methanol-dichloromethane to give 0.015 g of 4-(3-chloro-phenyl)-2-[6-(1-methyl-piperidin-4-ylmethoxy)-benzoimidazol-1-yl]-thiazole-5-carboxylic acid amide (I.24). MH+/Z=482

Provenance & Evidence