以四丁铵六钨酸盐为可重复使用非均相催化剂无溶剂合成1,8-二氧十氢吖啶(英文)

• 作 者: Abolghasem DAVOODNIA Atefeh ZARE-BIDAKI Hossein BEHMADI
• 机 构: Department of Chemistry,Mashhad Branch,Islamic Azad University,Mashhad,Iran,
• 出 处: 催化学报
• 发表日期: 2012年11期
• 关键词: 非均相催化剂 aromatic ammonium conveniently inexpensive aldehydes facile reused acetat

Tetrabutylammonium hexatungstate,[TBA]2[W6O19],has been used as an efficient,inexpensive,and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by the reaction of dimedone with aromatic or aliphatic aldehydes in the presence of a nitrogen source(ammonium acetate or aromatic amines) under neat conditions.There are several advantages to the current process over the standard procedures available in the literature,including shorter reaction times(7-14 min),higher yields,facile work-up,and minimal environmental impact.Furthermore,the catalyst can be conveniently recovered and reused.

Tetrabutylammonium hexatungstate, [TBA] 2 [W6O19], has been used as an efficient, inexpensive, and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by the reaction of dimedone with aromatic or aliphatic aldehydes in the presence of a nitrogen source (ammonium acetate or aromatic amines) under neat conditions. There are several advantages to the current process over the standard procedures available in the literature, including shorter reaction times (7-14 min), higher yields, facile work -up, and minimal environmental impact. Futuremore, the catalyst can be facilitate recovered and reused.