Magnetite Nanoparticles-Supported APTES as a Powerful and Recoverable Nanocatalyst for the Preparation of 2-Amino-5,10-dihydro- 5,10-dioxo-4H-benzo[g]chromenes and Tetrahydrobenzo[g]quinoline-5,10- diones
作者:Mohammad Ali Ghasemzadeh、Zahra Elyasi、Mina Azimi-Nasrabad、Boshra Mirhosseini-Eshkevari
DOI:10.2174/1386207319666161223121612
日期:2017.3.23
-5,10-diones using one-potmulti-componentreactions in the presence of Fe3O4@SiO2-NH2 nanocomposite. The preparation and use of aminofunctionalized Fe3O4@SiO2 as a powerful and reusable nanocatalyst is described. The catalyst was characterized by spectral techniques including FT-IR, SEM, XRD, EDX and VSM analysis. This method offers the advantages of high yields, short reaction times, comfortable
4-naphthaquinone, aromatic aldehydes, methyl/ethyl acetoacetate and ammonium acetate in ethanol undermicrowaveirradiation at 100 °C afforded tetrahydrobenzo[g]quinoline-5,10-diones regioselectively in good yields. This transformation presumably proceeds via α,β-unsaturated triketone generation/Michael addition/regioselective annulation via intramolecular condensation domino sequence.
在100°C的微波辐射下,2-羟基-1,4-萘醌,芳族醛,乙酰乙酸甲酯/乙酸乙酯和乙酸铵在乙醇中进行的容易的四组分多米诺反应,可选择性地产生四氢苯并[ g ]喹啉-5,10-二酮丰产。该转化大概通过α,β-不饱和三酮的产生/迈克尔加成/通过分子内缩合多米诺序列的区域选择性环进行。