A Variation in Acid-Catalyzed Isomerization of Abietadienoic Acids
Titel:
A Variation in Acid-Catalyzed Isomerization of Abietadienoic Acids
Auteur:
Zinkel, Duane F.
Verschenen in:
Journal of wood chemistry and technology
Paginering:
Jaargang 11 (1991) nr. 4 pagina's 439-446
Jaar:
1991-12-01
Inhoud:
Heating the individual common abietadienoic acid methyl esters with p-toluene sulfonic acid in chloroform led to the formation of methyl abietadienoates other than the equilibrium mixture of methyl abietate, palustrate, and neoabietate that is usually formed by acid-catalyzed isomerization. Of these other methyl abietadienoates, the three principal constituents comprised 10%, 4% and 2% of the monomers; these compounds were isolated and identified as methyl 13β-abieta-7,9(11)-dien-18-oate, methyl 7,9(11)-abietadien-18-oate, and methyl 8,12-abietadien-18-oate, respectively.
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