Acetic Anhydride → HCID 54447297, compound

Participants

Reaction Steps

To a mixture of acetic anhydride (8.1 g) and pyridine (3.2 g), 3,7,11,15,19-pentamethyl-2,6,14,18-eicosatetraen-10-on-1-ol (15 g) is added, and stirring is continued while cooling with ice for 3 hours. The reaction mixture is poured into ice water and extracted with ether. The ether extract is washed with water, dired and evaporated to give 1-acetoxy-3,7,11,15,19-pentamethyl-2,6,14,18-eicosatetraen-10-one (15 g). IR: 1740, 1710, 1675 cm-1. NMR (carbon tetrachloride): δ 1.01 (d), 1.56 (s), 1.65 (s), 1.90 (s), 1.97 (s), 2.05-2.71 (m), 4.43 (d), 4.70-5.39 (m).

Provenance & Evidence