ARTICLE This journal isAnchored palladium (II) in functionalized MCM-41 mesoporous silica was prepared and used as an efficient, recoverable and thermally stable heterogeneous nano catalyst for C-C, C-O and C-N bond formation in cross-coupling reactions in the presence of Ph 3 SnCl. MCM-41 was prepared trough hydrothermal synthesis using tetraethyl orthosilicate (Si(OC 2 H 5 ) 4 ) as silica source and cetyltrimethylammonium bromide (CTAB) as a template. The structure of functionalized MCM-41 was studied by FT-IR, XRD, SEM, TEM, TGA, EDS, ICP and BET techniques.

The preparation of phenols and anilines from aryl halides in the presence of MCM-41-dtz-Pd as a heterogeneous nanocatalyst has been introduced.

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Quinazoline-2,4-diones are of considerable interest due to their wide pharmacological properties. Here, we have described an environmentally friendly method for the one-pot synthesis of 2,4-(1H,3H)-quinazolinediones from the reaction of anthranilic acid derivatives with urea in H2O media under microwave irradiations. This method is simple, safe, and fast which produces high yield of products without use of any catalyst.

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