Selective estragole to trans-anethole isomerization in ionic liquids

Selective estragole to trans-anethole isomerization in ionic liquids

Leal, Bárbara; Pazini, Alessandra; Dupont, Jairton

Abstract:

Trans-anethole is a naturally-occurring product which has been traditionally extracted from anise or fennel oils, albeit with variable proportions of its cisisomer as an impurity. However, the increasing demand of trans-anethole has made extraction from natural sources not sufficient to supply the market, hence the need to produce it synthetically. Effectively, only trans-anethole is interesting for industry since the cis-isomer presents a higher toxicity and unpleasant organoleptic properties. Consequently, the search for efficient and selective catalytic systems able to promote the estragole to trans-anethole isomerization still remains a challenge for synthetic chemists.

Trans-anethole is a naturally-occurring product which has been traditionally extracted from anise or fennel oils, albeit with variable proportions of its cisisomer as an impurity. However, the increasing demand of trans-anethole has made extraction from natural sources not sufficient to supply the market, hence the need to produce it synthetically. Effectively, only trans-anethole is interesting for industry since the cis-isomer presents a higher toxicity and unpleasant organoleptic properties. Consequently, the search for efficient and selective catalytic systems able to promote the estragole to trans-anethole isomerization still remains a challenge for synthetic chemists.

Palavras-chave:

DOI: 10.5151/chempro-15bmos-BMOS2013_2013915191815

Referências bibliográficas

• [1] 1 Lastra-Barreira, B. and Crochet, P. Green Chem. 2010, 12, 1311.
• [2] 2 Lastra-Barreira B.; Francos, J.; Crochet, P. and Cadierno V. Green Chem.
• [3] 2011, 13, 307.

Como citar:

Leal, Bárbara; Pazini, Alessandra; Dupont, Jairton; "Selective estragole to trans-anethole isomerization in ionic liquids", p-264-264. In: In Blucher Chemistry Proceedings, São Paulo, v. 1, n. 2, Dezembro.2013. São Paulo: Blucher, 2013.
ISSN 23184043, DOI 10.5151/chempro-15bmos-BMOS2013_2013915191815