Abstract: Dehydroabietic acid chloride was prepared from dehydroabietic acid which was isolated and purified from disproportionated rosin. Pinic acid dihydrazide was synthesized using α-pinene as raw material via pinonic acid, pinic acid and pinic acid diethyl esters. Pinic acid dihydrazide could readily react with dehydroabietic acid chloride under phase transfer catalysis to afford N,N'-didehydroabietyl pinic acid dihydrazide. Pinic acid diacyl-didehydroabietyl-bis-oxadiazole was synthesized by cyclization of N,N'-didehydroabietyl pinic acid dihydrazide with POCl₃. The synthetic conditions were studied and the target compound was characterized by elemental analysis, IR, MS, ¹H NMR and ¹³C NMR.

Key words: dehydroabietic acid, α-pinene, bis-1, 4-oxadiazole