Acetyl chloride → HCID 178475438, compound

Participants

Reaction Steps

To a solution of 3.03 g. (0.01 m.) of 5-acetyl-4-hydroxy-3-[1-(p-hydroxyphenylamino)ethylidene]-2H-pyran-2,6(3H)-dione, 1.0 g. (0.01 m.) of triethylamine in 150 ml. of tetrahydrofuran is added 0.78 g. (0.01 m.) of acetyl chloride. The resulting mixture is refluxed for two hours, cooled and filtered. The solid is recrystallized to give 3-[1-(p-acetoxyphenylamino)ethylidene]-5-acetyl-4-hydroxy-2H-pyran-2,6(3H)-dione, m.p. 199°-201° C.

Provenance & Evidence