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Eco-friendly synthesis of 1,8-dioxo-octahydroxanthenes catalyzed by ionic liquid in aqueous media

✍ Scribed by Dong Fang; Jin-Ming Yang; Zu-Liang Liu

Publisher
Journal of Heterocyclic Chemistry
Year
2010
Tongue
English
Weight
101 KB
Volume
48
Category
Article
ISSN
0022-152X

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✦ Synopsis

A biodegradable functionalized ionic liquid 3-(N,N-dimethyldodecylammonium)propanesulfonic acid hydrogen sulfate ([DDPA][HSO 4 ]) was prepared and used as a Brønsted acid-surfactant-combined catalyst for the eco-friendly one-pot synthesis of 1,8-dioxo-octahydroxanthenes at 100 C in water. Under these conditions, the reaction of various aromatic aldehydes with dimedone generated 1,8-dioxo-octahydroxanthenes in good yields with a simple postreaction procedure. The products could simply be separated from the catalyst/water system, and the catalyst could be reused at least six times without noticeably decreasing the catalytic activity.

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