16112-55-3Relevant academic research and scientific papers
Tb2(WO4)3@N-GQDs-FA as an efficient nanocatalyst for the efficient synthesis of β-aminoalcohols in aqueous solution
Azizi, Sajjad,Darroudi, Mahdieh,Soleymani, Jafar,Shadjou, Nasrin
, (2021/02/12)
In the current study, Tb2(WO4)3@N-(GQDs) modified with folic acid (FA) was synthesized during the chemical reaction of terbium (III) tungstate nanoparticles with nitrogen doped graphene quantum dots (N-GQDs) and introduced
Synthesis and application of Cu(II) immobilized MCM-41 based solid Lewis acid catalyst for aminolysis reaction under solvent-free condition
Chaudhary, Garima,Gupta, Neha,Singh, Amit Pratap
, (2021/07/22)
In this paper, a Cu(II) immobilized periodic mesoporous organosilica (PMOs) was synthesized and used as a reusable solid Lewis acid catalyst for the aminolysis of epoxides under solvent-free conditions. An amide-based ligand, L-propylsilyl (1) having a specific binding pocket was prepared and fabricated on mesoporous MCM-41 to produce mesoporous organosilica L-propylsilyl@MCM-41 (2). Further, it has been utilized for anchoring Cu(II) ions under controlled reaction conditions to yield solid Lewis acid catalyst Cu(II)-L-propylsilyl@MCM-41 (3). The synthesized catalyst 3 exhibits significantly higher catalytic activity for aminolysis compared to hitherto known solid Lewis acid catalysts. An extensive range of β-amino alcohols with high regio and stereoselectivity were prepared by using catalyst 3. The catalyst was recovered easily and reused eight times without any loss in its catalytic activity. Furthermore, the synthesis of clinically significant propranolol (β-blocker) from α- naphthyl glycidyl ether was attained successfully using catalyst 3 in a very decent yield.
X-ray structurally characterized Mo (VI), Fe (III) and Cu (II) complexes of amide-imine conjugate: (bio)catalytic and histidine recognition studies
Ta, Sabyasachi,Ghosh, Milan,Salam, Noor,Das, Jayanta,Islam, Manirul,Brand?o, Paula,Félix, Vítor,Sanmartin, Jesus,Das, Debasis
, (2020/07/13)
An amide-imine conjugate, (E)-N′-((2-hydroxybenzen-1-yl) methylene)-4-methylbenzohydrazide (H2LPTASAL), derived from 4-methyl-benzoic acid hydrazide (PTA) and 2-hydroxybenzaldehyde is used to prepare Mo (VI), Cu (II) and Fe (III) complexes. The X-ray structurally characterized complexes have been explored as catalyst for amine assisted asymmetric ring opening (ARO) of epoxide, carbon-heteroatom cross-coupling and ethyl benzene oxidation. In addition, their catecholase like activities have thoroughly been investigated. Moreover, the Cu (II) complex selectively recognizes histidine by fluorescence spectroscopy.
A Multicomponent Approach to Oxazolidinone Synthesis Catalyzed by Rare-Earth Metal Amides
Zhou, Meixia,Zheng, Xizhou,Wang, Yaorong,Yuan, Dan,Yao, Yingming
, p. 5783 - 5787 (2019/04/14)
Three-component reaction of epoxides, amines, and dimethyl carbonate catalyzed by rare-earth metal amides has been developed to synthesize oxazolidinones. 47 examples of 3,5-disubstituted oxazolidinones were prepared in 13–97 % yields. This is a simple and most practical method which employs easily available substrates and catalysts, and is applicable to a wide range of aromatic and aliphatic amines, as well as mono-substituted epoxides. Scope of disubstituted epoxides is rather limited, which requires further study. Preliminary mechanistic study reveals two possible reaction pathways through intermediates of β-amino alcohols or amides.
Catalytic synthesis of organic cyclic carbonate through CO2 fixation and production of β-amino alcohol via ring opening of epoxides under green condition by polystyrene embedded Al(III) catalyst
Biswas, Surajit,Roy, Dipanwita,Ghosh, Swarbhanu,Islam, Sk Manirul
, (2019/08/06)
Development of low cost, eco-friendly heterogeneous catalyst for the production of value added organic compounds has been drawn a considerable attention to the synthetic chemists in recent era. Keeping the above idea in our mind, we have design and synthesized a polymer anchored Al(III) composite from modified Merrifield resin. The composite was characterized properly by FT-IR spectra, SEM, EDAX, elemental analysis, ICP-AES and PXRD studies. The low cost material is very efficient heterogeneous catalyst for the production of fine organic chemicals such as organic cyclic carbonates and 2-amino alcohols under green and mild reaction conditions. Organic cyclic carbonates were synthesized through the insertion of carbon dioxide into epoxides at room temperature under solvent free condition. The developed protocol of catalytic synthesis of cyclic carbonates is sustainable, eco-friendly and cost-effective. Moreover atmospheric carbon dioxide is utilized here. Besides, the catalyst is very much efficient to produce 2-amino alcohol from ring opening of epoxides by nucleophilic attack of amine under solvent free condition and at room temperature. This polymer anchored Al(III) can be recovered and reused easily. The catalyst preserved its catalytic intensity even after use of eight successive catalytic cycles.
Magnetic g-C3N4 nanocomposite-catalyzed environmentally benign aminolysis of epoxide
Ahooie, Tahereh Soleymani,Azizi, Najmedin,Hashemi, Mohammad Mahmoudi,Yavari, Issa
, p. 1425 - 1436 (2017/10/31)
A magnetic graphitic carbon nitride (g-C3N4) nanocomposite was prepared and used as a novel magnetically retrievable nanocatalyst for efficient ring opening of epoxides with aromatic amines. A variety of aryl and alkyl epoxides were
Highly effective opening of epoxides with aromatic amines in presence of β-Cyclodextrin in water
Tang, Siping,Xu, Zhifeng,Li, Junhua,Deng, Peihong,Feng, Lanyong
, p. 1165 - 1170 (2018/04/14)
This paper reports a simple, mild, and convenient method to synthesize β-amino alcohols. These β-amino alcohols were achieved in excellent yields (80-96 %) by ring-opening reaction of oxiranes with aromatic amines catalyzed by β-cyclodextrin at 30 oC in w
Zirconium triflate grafted on SBA-15 as a highly efficient solid acid catalyst for ring opening of epoxides by amines and alcohols
Tayade, Kamlesh N.,Wang, Lianyue,Shang, Sensen,Dai, Wen,Mishra, Manish,Gao, Shuang
, p. 758 - 766 (2017/04/24)
Metal (Al, Ti, Zr) triflate grafted mesoporous SBA-15 (AlTf/S, TiTf/S, ZrTf/S) samples were synthesized as inexpensive solid acid materials by a simple one-pot-two-step synthesis methodology. These materials were characterized by X-ray diffraction, N2-sorption, thermogravimetric analysis, Fourier transform infrared spectroscopy (FT-IR), in-situ pyridine FT-IR spectroscopy, and elemental analysis. ZrTf/S was found to be a highly efficient and reusable solid acid catalyst for ring opening of epoxides with amines and alcohols and produced β-amino alcohols and β-alkoxy alcohols respectively under ambient reaction conditions. The ZrTf/S catalyst showed the highest activity, which was attributed to its high acidity compared with that of the Ti and Al containing samples.
Graphite oxide catalyzed synthesis of β-amino alcohols by ring-opening of epoxides
Mirza-Aghayan, Maryam,Alvandi, Farzaneh,Molaee Tavana, Mahdieh,Boukherroub, Rabah
, p. 70 - 79 (2017/03/14)
Graphite oxide as a heterogeneous and recyclable solid acid catalyzed a simple and efficient method for the synthesis of β-amino alcohols by ring opening of epoxides with amines. This method is effective with various aromatic and aliphatic amines under solvent-free conditions. The corresponding β-amino alcohols are obtained in high yields (56%-95%) and short reaction times (15-30 min) with high regio- and chemoselectivity under metal-free conditions.
Terbium–organic framework as heterogeneous Lewis acid catalyst for β-aminoalcohol synthesis: Efficient, reusable and green catalytic method
Karimi, Meghdad,Hajiashrafi, Taraneh,Heydari, Akbar,Azhdari Tehrani, Alireza
, (2017/10/03)
A terbium–organic framework (Tb-MOF) was prepared using a previously reported procedure. Tb-MOF was characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, powder X-ray diffraction and surface area analysis. Tb-MOF was e
