Pyridine → HCID 20457196, compound

Participants

Reaction Steps

4.68 g (0.063 mol) of acetohydrazide (2-a) and 5 g (0.063 mol) of pyridine were dissolved in 50 ml of acetonitrile, and stirred with cooling in an ice-bath. Thereto, a solution of 20 g (0.064 mol) of tribromoacetic acid chloride (which was prepared from tribromoacetic acid and thionyl chloride, and had b.p. of 800°-81° C./17 mm Hg) dissolved in 20 ml of acetonitrile was added dropwise. After the conclusion of the dropwise addition, the stirring ring was further continued for 30 min. Thereupon, a white precipitate was deposited. It was filtered off, and washed with successive, acetonitrile and water. Thus, 10.7 g (0.030 mol) of N-acetyl-N-tribromoacetylhydrazine (3-a) was obtained. Yield 48%.

Provenance & Evidence