Ethanol → HCID 140490822, compound

Participants

Reaction Steps

Under a nitrogen atmosphere, hydrazine monohydrate (530 g) was added to ethanol (1.7 L) over 55 minutes. To the mixture was added 1-(1-amino-1H-pyrrol-2-yl)ethanone hydrochloride (170 g) over 20 minutes. The mixture was stirred for 10 minutes at room temperature and heated to refluxing temperature over 55 minutes, and refluxed for 15 minutes. After cooling the mixture under a water bath, water (1.7 L) was added to the mixture (30 to 31° C.). Ethanol was evaporated off, and the resulting mixture was extracted with chloroform (0.85×4 mL). The combined organic extract was washed with brine (1.3 L). The brine was extracted with chloroform (0.85 L). The combined organic extract was dried over anhydrous magnesium sulfate, and evaporated to give (1E)-1-(1-amino-1H-pyrrol-2-yl)ethanone hydrazone as a brown crystal (112 g).

Provenance & Evidence