Hydrochloric Acid → (2E)-4-(Dimethylamino)-2-butenoic acid hydrochloride

関与物質

反応条件

反応手順

Methyl (2E)-4-(dimethylamino)but-2-enoate (3.4 g, 23.7 mmol) was dissolved in methanol (25 mL). A solution of sodium hydroxide (0.95 g, 23.7 mmol) in water (7 mL) was added, and the mixture was heated to 50° C. for 1 h. The pH was then adjusted to 2 with conc. hydrochloric acid. The solution was concentrated to dryness, and the residue was triturated with ethanol (30 mL). It was filtered, and the solution was concentrated in vacuo. The residue was triturated with 2-propanol, and the precipitate was collected by suction filtration and dried to yield 2.00 g (51%) of the title compound.

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