Green synthesis and characterization of mixed-phase Fe2O3 nanorods as a novel magnetically recoverable heterogeneous catalyst for Biginelli synthesis
作者:Dnyaneshwar Sanap、Lata Avhad、Suresh Ghotekar、Nitin D. Gaikwad
DOI:10.1016/j.molstruc.2023.135246
日期:2023.7
biosynthesized Fe2O3 NRs (C1, C2, and C3) was examined for one-pot synthesis of ethyl 6-(chloromethyl)-1,2,3,4-tetrahydro-2-oxo-4-arylpyrimidine-5-carboxylate via Biginelli reaction. To achieve high yields (93–99 %) of 6-(chloromethyl)-1,2,3,4-tetrahydro-2-pyrimidinone derivatives, this heterogeneous catalytic method is used with a wide range of aromatic aldehydes within a minimum reaction time, simple reaction
以柠檬桉和九里香叶提取物1:1混合物为封端剂,采用溶胶-凝胶自燃法首次成功生物合成了混相(赤铁矿和磁赤铁矿)磁性Fe 2 O 3纳米棒,研究了其对合成 6-(氯甲基)-1,2,3,4-四氢-2-嘧啶酮 (THPMs) 衍生物的催化作用。此外,生物合成的 Fe 2 O 3的相形成、表面形貌和结晶度使用粉末 XRD(X 射线衍射)、UVDRS(紫外-可见反射光谱)、FTIR(傅立叶变换红外光谱)、FESEM(场发射扫描电子显微镜)、EDX(能量色散 X 射线)探索纳米棒 (NR)和 VSM(振动样品磁强计)。此外,研究了生物合成的 Fe 2 O 3 NRs(C1、C2 和 C3)的催化活性,用于一锅法合成乙基 6-(氯甲基)-1,2,3,4-四氢-2-oxo-4 -arylpyrimidine-5-carboxylate通过比吉内利反应。为了实现 6-(氯甲基)-1,2,3,4-四氢-2-嘧啶酮衍生物的高产率