1,4-Dioxane → 2-Amino-5-pyridin-3-ylthiophene-3-carbonitrile

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Reaction Steps

tert-Butyl(3-cyano-5-pyridin-3-yl-2-thienyl)carbamate (800 mg, 2.07 mmol) was dissolved in 4M hydrochloric acid in dioxane (10.4 ml, 41.6 mmol) and the mixture was stirred at room temperature for 6 h. The mixture was quenched with 1N sodium hydroxide (50 mL) and extracted with ethyl acetate (3×100 mL). The combined organics were dried over anhydrous magnesium sulfate, filtered, and concentrated under reduced pressure to afford the title compound as a solid.

Provenance & Evidence