Sodium Iodide → 7-[4-(2-butoxyethoxy)phenyl]-1-(2-oxopropyl)-N-[4-[[N-methyl-N-(tetrahydropyran-4-yl)amino]methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide

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A mixture of 7-[4-(2-butoxyethoxy)phenyl]-1-[(2-methyl-1,3-dioxolan-2-yl)methyl]-N-[4-[[N-methyl-N-(tetrahydropyran-4-yl)amino]methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide (100 mg), cerium chloride heptahydrate (300 mg), sodium iodide (19 mg) and acetonitrile (5 ml) was stirred at 60° C. for 5 days. Water was added to the reaction system, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried with magnesium sulfate. After concentration under reduced pressure, the residue was separated and purified with column chromatography (ethanol:ethyl acetate=1:3) to give 7-[4-(2-butoxyethoxy)phenyl]-1-(2-oxopropyl)-N-[4-[[N-methyl-N-(tetrahydropyran-4-yl)amino]methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide (Compound 108) (52 mg) as yellow crystals.

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