Fe2+ supported on hydroxyapatite-core–shell-γ-Fe2O3 nanoparticles: Efficient and recyclable green catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives
作者:Hakimeh Sadat Haeri、Sobhan Rezayati、Eshagh Rezaee Nezhad、Hamed Darvishi
DOI:10.1007/s11164-015-2318-5
日期:2016.5
electron microscopy, and vibrating sample magnetometry spectra. Then, γ -Fe2O3–HAp-Fe2+ NPs were used as an efficient, reusable and heterogeneous nanocatalyst for one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes via the one-pot condensation reaction of arylaldehydes and 2-naphthol under solvent-free conditions in good to excellent yields. This procedure has a lot of advantages such as very easy
在这项工作中,铁2+支撑在羟基磷灰石的核-壳- γ -Fe 2 ö 3纳米颗粒( γ -Fe 2 ö 3 -HAp -铁2+的NP)已被制备和表征通过傅里叶变换红外光谱,X-射线衍射,透射电子显微镜,扫描电子显微镜和振动样品磁强光谱。然后, γ -Fe 2 O 3 -HAp-Fe 2+通过无溶剂条件下芳基醛和2-萘酚的一锅缩合反应,NPs被用作一种高效,可重复使用的多相纳米催化剂,用于一锅合成14-芳基-14H-二苯并[a,j]黄嘌呤。高产。该方法具有许多优点,例如非常容易的反应条件,操作简单,反应时间短,产率高以及通过避免有毒的常规催化剂和溶剂而具有绿色方面。此外, γ -Fe 2 O 3 -HAp-Fe 2+ NPs易于从反应混合物中回收,可以重复使用七次而不会损失活性。