Crumpled perovskite-type LaMoxFe1-xO3 nanosheets: A reusable catalyst for rapid and green synthesis of naphthopyranopyrimidine derivatives
摘要:
In this study, crumpled nanosheets of molybdenum-doped LaFeO3 (LaMo0.1Fe0.9O3) were prepared by the citric acid based sol-gel route. Characterization of the prepared LaMo0.1Fe0.9O3 was carried out by Fourier transform infrared spectra (FT-IR), powder X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), field emission scanning electron microscopy (FE-SEM). The catalytic performance of LaMo0.1Fe0.9O3 nanostructures was evaluated in the green synthesis of naphthopyranopyrimidines from one-pot three-component reaction of 2-naphthol, different substituted aromatic aldehydes, barbituric acid and its derivatives under solvent-free conditions. This method provides several advantages such as mild conditions, operational simplicity, high yields, safety, easy workup and simple purification of products, little catalyst loading, and reusability of the catalyst. (C) 2019 Elsevier Ltd. All rights reserved.
Phosphoric acid supported on alumina (H3PO4/Al2O3) is an efficient catalyst for the catalytic multi-component condensation reaction and a wide variety of syntheses of benzoxanthene pigments in good yields. The remarkable features of this new procedure are high conversions, shorter reaction times, cleaner reaction, and simple experimental and work-up procedures.
Immobilization of Lewis acidic ionic liquid on perlite nanoparticle surfaces as a highly efficient solid acid catalyst for the solvent-free synthesis of xanthene derivatives
作者:L. Moradi、M. Mirzaei
DOI:10.1039/c9ra03312b
日期:——
modified with Lewis acidicionicliquid (perlite NP@IL/ZrCl4) through a two step procedure. The prepared solid acid catalyst was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX) and thermo gravimetric analysis (TGA). Perlite NP@IL/ZrCl4 was used as a new solid acid, reusable and green
Molecular iodine-catalyzed one-pot synthesis of tetrahydrobenzo[a]xanthene-11-one and diazabenzo[a]anthracene-9,11-dione derivatives under microwave irradiation
作者:X. J. Sun、J. F. Zhou、P. S. Zhao
DOI:10.1002/jhet.742
日期:2011.11
An efficient one‐pot condensation of β‐naphthol, aldehydes, and cyclic 1,3‐dicarbonyl compounds has been achieved with molecular iodine as a catalyst undermicrowaveirradiation, thus a variety of tetrahydrobenzo[a]xanthene‐11‐one and diazabenzo[a]anthracene‐9,11‐dione derivatives were prepared in good yields. J. Heterocyclic Chem., (2011).
在微波辐射下,以分子碘为催化剂,可以实现β-萘酚,醛和环状1,3-二羰基化合物的高效单锅缩合反应,因此可以制得各种四氢苯并[ a ]蒽并十一酮和重氮苯并[以高收率制备了]蒽-9,11-二酮衍生物。J.杂环化学。(2011)。
Molecular Iodine–Catalyzed One-Pot Synthesis of Tetrahydrobenzo[<i>a</i>]xanthene-11-one and Diazabenzo[<i>a</i>]anthracene-9,11-dione Derivatives
作者:Xiao-Jun Sun、Jian-Feng Zhou、Pu-Su Zhao
DOI:10.1080/00397911.2010.541966
日期:2012.5.15
Abstract An efficient one-pot condensation of β-naphthol, aldehydes, and cyclic 1,3-dicarbonyl compounds has been achieved with molecular iodine as a catalyst, thus a variety of tetrahydrobenzo[a]xanthene-11-one and diazabenzo[a]anthracene-9,11-dionederivatives were prepared in good yields. GRAPHICAL ABSTRACT
Indium(III) chloride catalyzed one-potsynthesis of 12-aryl/alkyl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one and 8,10-dimethyl-12-aryl-8,12-dihydro-7-oxa-8,10-diazabenzo[a]anthracene-9,11-dionederivatives have been achieved by three component cyclocondensation of aldehydes, β-naphthol and cyclic 1,3-dicarbonyl compounds under solvent free condition in high yields. P2O5 too has been found as an effective
氯化铟(III)催化一锅合成12-芳基/烷基-8,9,10,12-四氢苯并[ a ]氧杂蒽-11-one和8,10-二甲基-12-芳基-8,12-二氢通过醛,β-萘酚和环状1,3-二羰基化合物在无溶剂条件下的三组分环缩合,可以高产率获得-7-氧杂-8,10-二氮杂苯并[ a ]蒽-9,11-二酮衍生物。还发现P 2 O 5是实现该转化的有效催化剂。