78752-13-3Relevant academic research and scientific papers
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.
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
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.
Asymmetric Hydrolytic and Aminolytic Kinetic Resolution of Racemic Epoxides using Recyclable Macrocyclic Chiral Cobalt(III) Salen Complexes
Tak, Rajkumar,Kumar, Manish,Menapara, Tusharkumar,Gupta, Naveen,Kureshy, Rukhsana I.,Khan, Noor-ul H.,Suresh
supporting information, p. 3990 - 4001 (2017/11/22)
New chiral macrocyclic cobalt(III) salen complexes were synthesized and used as catalyst for the asymmetric kinetic resolution (AKR) of terminal epoxides and glycidyl ethers with aromatic/aliphatic amines and water as nucleophiles. This is the first occasion where a Co(III) salen complex demonstrated its ability to catalyze AKR as well as hydrolytic kinetic resolution (HKR) reactions. Excellent enantiomeric excesses of the epoxides, the corresponding amino alcohols and diols (upto 99%) with quantitative yields were achieved by using the chiral Co(III) salen complexes in dichloromethane at room temperature. This protocol was further extended for the synthesis of two important drug molecules, i.e., (S)-propranolol and (R)-naftopidil. The catalytic system was also explored for the synthesis of chirally pure diols and chiral cyclic carbonates using carbon dioxide as a greener renewable C1 source. The catalyst was recycled for upto 5 catalytic cycles with retention of enantioselectivity. (Figure presented.).
A magnetic nanoparticle-catalyzed regioselective ring opening of epoxides by aromatic amines
Azizi, Najmedin,Kamrani, Parisa,Saadat, Mostafa
, p. 431 - 434 (2016/05/19)
Sulfonic acid-functionalized silica-coated magnetic Fe3O4 nanoparticles were synthesized and applied as a green catalyst for an efficient and environmentally friendly ring opening of epoxides with aromatic amines in good to excellent
A new recyclable functionalized mesoporous SBA-15 catalyst grafted with chiral Fe(iii) sites for the enantioselective aminolysis of racemic epoxides under solvent free conditions
Halder, Mita,Bhanja, Piyali,Roy, Susmita,Ghosh, Swarbhanu,Kundu, Sudipta,Islam, Md. Mominul,Islam, Sk. Manirul
, p. 97599 - 97605 (2016/10/31)
An efficient and enantioselective strategy for the catalytic ring opening of racemic meso and terminal epoxides with aromatic as well as cyclic amine derivatives has been reported over a new mesoporous SBA-15 catalyst grafted with a chiral Fe(iii) complex
A new chiral Fe(III)-salen grafted mesoporous catalyst for enantioselective asymmetric ring opening of racemic epoxides at room temperature under solvent-free conditions
Roy, Susmita,Bhanja, Piyali,Islam, Sk. Safikul,Bhaumik, Asim,Islam, Sk. Manirul
supporting information, p. 1871 - 1874 (2016/02/05)
We have designed a new mesoporous SBA-15 supported chiral Fe(III)-salen material (Fe@SBSAL) having high BET surface area and porosity. The material showed excellent catalytic efficiency in regio- and enantioselective (ee > 99%) asymmetric ring opening (ARO) of racemic meso- and terminal-epoxides with various anilines at room temperature under solvent-free conditions within 1-3 h reaction time.
Chiral Co(III)-salen complex supported over highly ordered functionalized mesoporous silica for enantioselective aminolysis of racemic epoxides
Islam, Md. Mominul,Bhanja, Piyali,Halder, Mita,Kundu, Sudipta K.,Bhaumik, Asim,Islam, Sk. Manirul
, p. 109315 - 109321 (2016/11/30)
Here we demonstrate the synthesis of a novel chiral Co(iii)-salen complex supported functionalized 2D-hexagonal mesoporous silica material Co(iii)@AFS-1. This material has shown excellent catalytic activity for the regio- and enantioselective asymmetric ring opening (ARO) of terminal and meso epoxides using various aromatic as well as cyclic amines to produce chiral β-amino alcohols having very good enantioselectivities (ee > 99%) at ambient temperature under solvent-free neat conditions.
Synthesis of β-amino alcohols using the tandem reduction and ring-opening reaction of nitroarenes and epoxides
Shi, Chongyang,Ren, Cheng,Zhang, Erlei,Jin, Huile,Yu, Xiaochun,Wang, Shun
, p. 3839 - 3843 (2016/07/06)
A high yield one-pot synthesis of β-amino alcohols from nitroarenes and 1,2-epoxides was developed, which utilizes inexpensive iron dust as a reducing agent and NH4Cl as the only additive in a 50% (v/v) ethanol solution. This new efficient synthetic approach tolerates a wide range of functionalities. The mild reaction conditions (e.g., 60?°C), together with the use of low cost and readily available starting materials, make this synthetic approach an attractive alternative to the current synthesis of β-amino alcohols.
