Hydrochloric Acid → 7-Ethoxynaphthalen-1-amine

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Reaction Steps

Next, to a (7-ethoxy-naphthalen-1-yl)-carbamic acid t-butyl ester (47.9 g, 167 mmol) in 100 mL anhydrous 1,4-dioxane was added 4N HCl in 1,4-dioxane (100 mL) at 0° C. The mixture was stirred at room temperature for 2 hours. Diisopropyl ether was added to the reaction mixture and the precipitate was filtered. To the obtained solid was added saturated sodium bicarbonate and the product was extracted with ethyl acetate. The organic layer was dried over Na2SO4, filtered, and concentrated under reduced pressure to afford 7-ethoxy-naphthalen-1-ylamine (27.0 g, 86.3% yield).

Provenance & Evidence