Fe3O4@MCM-41@NH-SO3H: an Efficient Magnetically Reusable Nano-Catalyst for the Formylation of Amines and Alcohols.

In this article the preparation of Fe₃O₄@MCM-41@NH-SO₃H, a new sulfonated magnetic mesoporous nanocomposite, is reported. The introduced catalyst is structurally based on MCM-41 as the mesoporous support in which besides having all the unique properties, has a limited acidity so its catalytic strength was favorably improved via acidic functionalization as an applicable and efficient procedure. The accuracy of the specified formula attributed to the synthesized nanocomposite was verified using FT-IR, XRD, BET, TEM, VSM and TGA techniques and also pH analysis. In continue, the influence of this reagent on the formyl protection of amines and alcohols was investigated. As predicted, Fe₃O₄@MCM-41@NH-SO₃H showed considerable efficiency in the promotion of the studied reactions. [ABSTRACT FROM AUTHOR]