4-dodecylbenzenesulfonic acid (dbsa) as an efficient and recyclable catalyst for synthesis of 14-aryl- and 14-alkyl-14-h-dibenzo [a,j]xanthenes under solvent-free conditions
نویسندگان
چکیده
14-aryl- and 14-alkyl-14-h-dibenzo [a,j]xanthenes are prepared from the reaction of aromatic- and aliphaticaldehydes with β-naphthol in the presence of catalytic amounts of 4-dodecylbenzenesulfonic acid(dbsa) as asurfactant-type brønsted acid catalyst in toluene and under solvent-free conditions in excellent yields and shortreaction times. the catalyst was recovered and reused for five successive times without considerable loss in itsactivity.
منابع مشابه
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A simple and environmentally benign procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes by a one-pot condensation of 2-naphthol with aromatic aldehyde in the presence of [Et3NH][HSO4] as an acidic ionic liquid catalyst under solvent-free conditions has been developed. The reaction work-up is very simple and the catalyst can be easily separated from the reaction mixture and reused s...
متن کامل[Et3NH][HSO4] catalyzed one-pot synthesis of 14-aryl-14H-dibenzo[a,j] xanthenes under solvent-free conditions
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عنوان ژورنال:
iranian journal of science and technology (sciences)ISSN 1028-6276
دوره 37
شماره 1 2013
میزبانی شده توسط پلتفرم ابری doprax.com
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