2,2-Diethoxyethylamine → 1-(aminomethyl)-N-methyl-N-phenyl-3,4-dihydro-1H-2-benzopyran-6-amine

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Reaction Steps

2-{3-[Methyl(phenyl)amino]phenyl}ethan-1-ol (1.0 g, 4.4 mmol) was stirred in 4N HCl/dioxane (8 mL) at 0° C. Aminoacetaldehyde diethyl acetal (880 mg, 6.6 mmol) was added, and the reaction stirred for at r.t. for 1 h and then at 108° C. in the microwave for 1 h. The solution was concentrated and purified by silica gel chromatography (0% to 20% MeOH/DCM) to give 150 mg (13%) of the title compound as a yellow oil. [M+H] Calc'd for C17H20N2O, 269. Found, 269.

Provenance & Evidence