Boroujeni Parvanak Keveh, Heidari Zahra, Khalifeh Reza
Acta Chim Slov. 2016;63(3):602-8. doi: 10.17344/acsi.2016.2291.
A novel multiwalled carbon nanotube catalyst with -SO3H functional groups was easily prepared from its starting materials and used as an efficient heterogeneous catalyst for one-pot Knoevenagel condensation, Michael addition, and cyclodehydration of 5,5-dimethyl-1,3-cyclohexanedione (dimedone) with various aromatic aldehydes. Using this method 1,8-dioxo-octahydroxanthenes were obtained in excellent yields at room temperature. The present method is superior in terms of reaction temperature, reaction time, easy work-up, high yields, and ease of recovery of catalyst.
一种带有-SO3H官能团的新型多壁碳纳米管催化剂可由其起始原料轻松制备，并用作高效多相催化剂，用于5,5-二甲基-1,3-环己二酮（达米酮）与各种芳香醛的一锅法Knoevenagel缩合、迈克尔加成和环脱水反应。采用该方法在室温下可获得高产率的1,8-二氧代八氢呫吨。本方法在反应温度、反应时间、后处理简便、产率高以及催化剂易于回收等方面具有优势。
