багатокомпонентна реакція

We have studied a series of mixed metal oxides of Mg-Al by a simple co-precipitation technique. Various characterization techniques, including XRD, SEM, EDS, TEM, BET and CO₂-TPD were carried out to investigate their physicochemical properties. An efficient and facile protocol has been documented for the synthesis of chalcones using different aldehydes and acetophenone using Mg-Al oxide under reflux conditions in ethanol affording good to excellent yields. Recyclability of a catalyst is a significant feature of this protocol.

Aluminum sulfate octadecahydrate (Al₂(SO₄)₃•18H₂O) as an efficient, mild and eco-safe catalyst for one-pot four-component synthesis of polysubstituted dihydropyrrol-2-ones from reaction between dialkyl acetylenedicarboxylate, formaldehyde and amines (aromatic and aliphatic) under ambient temperature with good to high yields and short reaction times is reported.