Halloysite;
Nanotube;
Magnetic nanocatalyst;
Green chemistry;
Dihydropyrimidinone;
DIVERSITY-ORIENTED SYNTHESIS;
POT MULTICOMPONENT SYNTHESIS;
HETEROGENEOUS NANOCATALYST;
FE3O4;
NANOPARTICLES;
EFFICIENT;
CATALYST;
3,4-DIHYDROPYRIMIDIN-2(1H)-ONES;
NANOCOMPOSITE;
DERIVATIVES;
REMOVAL;
D O I:
10.1016/j.micromeso.2017.09.034
中图分类号:
O69 [应用化学];
学科分类号:
081704 ;
摘要:
In this work, the preparation of a new magnetic nanocomposite Fe3O4-halloysite-SO3H with nanotube morphology decorated by the spherical nanoparticles is reported. Furthermore, this porous heterogeneous catalyst was successfully used for the synthesis of dihydropyrimidinones starting from an aldehyde, a beta-etoester and urea or thiourea. The catalyst can be easily separated by an external magnet and recycled for ten times without any appreciable loss of activity. It was characterized by Fourier transform infrared (FT-IR) spectroscopy, energy dispersive X-ray (EDX) analysis, X-ray diffraction (XRD) pattern, X-ray fluorescence (XRF) analysis, vibrating sample magnetometry (VSM) curves, atomic force microscopy (AFM) image and scanning electron microscopy (SEM) image to confirm the formation of the nano composite. Simple workup, high-to-excellent yields and easy purification are some advantages of this protocol. (C) 2017 Elsevier Inc. All rights reserved.
机构:
Harvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USAHarvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USA
Burke, MD
;
Schreiber, SL
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h-index: 0
机构:
Harvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USAHarvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USA
机构:
Anna Univ, Div Nanosci & Technol, BIT Campus, Thiruchirappalli 620024, India
Indian Inst Technol, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, IndiaAnna Univ, Div Nanosci & Technol, BIT Campus, Thiruchirappalli 620024, India
Pari, Baraneedharan
;
Kasi, Nehru
论文数: 0引用数: 0
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机构:
Anna Univ, Dept Chem, BIT Campus, Thiruchirappalli 620024, IndiaAnna Univ, Div Nanosci & Technol, BIT Campus, Thiruchirappalli 620024, India
机构:
Harvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USAHarvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USA
Burke, MD
;
Schreiber, SL
论文数: 0引用数: 0
h-index: 0
机构:
Harvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USAHarvard Univ, Dept Chem & Chem Biol, Howard Hughes Med Inst, ICCB, Cambridge, MA 02138 USA
机构:
Anna Univ, Div Nanosci & Technol, BIT Campus, Thiruchirappalli 620024, India
Indian Inst Technol, Alternat Energy & Nanotechnol Lab, Madras 600036, Tamil Nadu, IndiaAnna Univ, Div Nanosci & Technol, BIT Campus, Thiruchirappalli 620024, India
Pari, Baraneedharan
;
Kasi, Nehru
论文数: 0引用数: 0
h-index: 0
机构:
Anna Univ, Dept Chem, BIT Campus, Thiruchirappalli 620024, IndiaAnna Univ, Div Nanosci & Technol, BIT Campus, Thiruchirappalli 620024, India