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A new method for synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromenes using p-dodecylbenzenesulfonic acid as catalyst in water | ||
Iranian Journal of Catalysis | ||
مقاله 2، دوره 3، شماره 4، اسفند 2013، صفحه 197-201 اصل مقاله (381.41 K) | ||
نویسندگان | ||
Enayatollah Sheikhhosseini* ؛ Dadkhoda Ghazanfari؛ Vida Nezamabadi | ||
Department of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, Kerman, Iran. | ||
چکیده | ||
p-Dodecylbenzenesulfonic acid (DBSA) was used as a catalyst for a simple and efficient one-pot synthesis of aryl substititued tetrahydrobenzo[b]pyrans and dihydropyrano[c]chromens via initial Knoevenagel, subsequent Micheal and final heterocyclization reactions of aryl aldehyde, malononitrile and 4-hydroxycoumarin/dimedone in moderate to excellent yields. The present method was operationally simple and use of water as the reaction medium made the process environmentally benign. | ||
کلیدواژهها | ||
Green media؛ Dihydropyrano[c]chromen؛ p-Dodecylbenzenesulfonic acid (DBSA)؛ Tetrahydrobenzo[b]pyran | ||
مراجع | ||
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