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Eco‐friendly synthesis of 1,8‐dioxo‐octahydroxanthenes catalyzed by ionic liquid in aqueous media
Author(s) -
Fang Dong,
Yang JinMing,
Liu ZuLiang
Publication year - 2011
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.543
Subject(s) - chemistry , ionic liquid , catalysis , dimedone , hydrogen sulfate , environmentally friendly , aqueous medium , aqueous solution , organic chemistry , pulmonary surfactant , ecology , biochemistry , biology
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 . J. Heterocyclic Chem., (2011).