619310-08-6Relevant articles and documents
Gold nanoparticles deposited on MnO2 nanorods modified graphene oxide composite: A potential ternary nanocatalyst for efficient synthesis of betti bases and bisamides
Nayak, Pratap S.,Barik, Bapun,Achary, L. Satish K.,Kumar, Aniket,Dash, Priyabrat
, (2019/06/06)
The decoration of novel nanostructures such as nano particle and nanorod on the surface of graphene oxide (GO) generate potential heterogeneous nanocatalyst. Highlighting this, in the present work, we have designed a ternary GO-MnO2-Au nanocomposite by decorating MnO2nanorods on the surface of graphene oxide via hydrothermal method, followed by deposition of Au nanoparticles on GO-MnO2 surface. The prepared nanocomposite was thoroughly characterised by different instrumental techniques such as X-Ray diffraction (XRD),Fourier transform infrared spectroscopy (FTIR),Raman spectroscopy, Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), High resolution Transmission electron microscopy (HRTEM), X-Ray photo electron spectroscopy (XPS), N2 adsorption desorption Brunauer–Emmett–Teller (BET) isotherm and Inductively coupled plasma - optical emission spectrometry (ICP-OES). FESEM and TEM images demonstrated that the MnO2 forms rod like structure having diameter of 60–100 nm and are uniformly distributed over the GO surface. HRTEM image clearly signifies gold (Au) nanoparticles having diameter of 7 ± 1.9 nm homogeneously distributed throughout the GO-MnO2 surface. Elementary state of Au and tetravalent nature of Mn as well as reduction of functional group after the decoration was confirmed from XPS studies. The catalyst GO-MnO2-Au was found to be the superior catalyst for synthesis of biologically active molecules such as Betti bases and Bisamides. The high catalytic activity of the materials can be attributed to the small and homogeneous distribution of gold nanoparticles, high redox potential of rod shaped MnO2 and the synergistic effect between GO, MnO2 and Au. All the reaction conditions were optimised by varying catalyst dosage, effect of solvent and temperature. The GO-MnO2-Au was easily recycled with minimal leaching and the product yield was found to be 85–90% after 4th cycle demonstrating the stability and durability of our nanocomposite.
Efficient synthesis of symmetrical bisamides catalyzed by reusable hydroxyapatite
Ramachandran, Gurusamy,Saraswathi, Ramachandran,Kumarraja, Mayilvasagam,Govindaraj, Palsamy,Subramanian, Thirumeni
supporting information, p. 216 - 222 (2018/01/01)
Efficient synthesis of symmetrical bisamides is achieved by hydroxyapatite catalyst. Hydroxyapatite catalyzes the reaction between aldehydes and amides to afford bisamides at reflux conditions in 87–95% yields in acetonitrile medium. The catalyst is readily recovered and reused at least three times without loss in its catalytic activity. This method is noteworthy that, symmetrical bisamides are synthesized by fast, simple, effective, and environmentally benign heterogeneous protocol.
Ultrasound-promoted synthesis of symmetrical bisamides by reaction between aromatic aldehydes and amides catalysed by p-toluenesulfonic acid
Pyrzehi-Bakhshani, Raziyeh,Hassanabadi, Alireza
, p. 35 - 37 (2016/01/26)
Reaction between aldehydes and amides catalysed by p-toluenesulfonic acid (p-TSA), under ultrasound irradiation and ambient conditions, gives symmetrical bisamide derivatives in excellent yield and in short time.
Choline peroxydisulfate oxidizing Bio-TSIL: Triple role player in the one-pot synthesis of Betti bases and gem-bisamides from aryl alcohols under solvent-free conditions
Gadilohar, Balu L.,Kumbhar, Haribhau S.,Shankarling, Ganapati S.
, p. 4647 - 4657 (2015/06/16)
The one-pot, multicomponent solvent-free synthesis of Betti bases (amidoalkyl naphthols) and gem-bisamides directly from alcohol is proposed by an eco-friendly approach using a new environmentally benign, biodegradable, oxidizing, and task-specific ionic liquid (bio-TSIL), namely, choline peroxydisulfate monohydrate (ChPS) 1. Choline bisulphate (ChBS) 2 reduced species is then generated in situ from 1, which catalyses the formation of the desired products in a shorter reaction time with good to excellent yields. This bio-TSIL 1 plays a triple role as an oxidant, catalyst and solvent. It is easily recycled and can be reused five times.
An efficient synthesis of symmetrical bisamides catalysed by molecular iodine under neutral conditions
Wang, Hongshe,Zeng, June
, p. 447 - 449 (2012/10/29)
An efficient synthesis of symmetrical bisamides is described in which aldehydes are reacted with amides in the presence of 5 mol% of iodine to give the corresponding bisamides in high yields under neutral conditions.
P-Toluene sulfonic acid-catalysed microwave synthesis of symmetrical bisamides by reaction between aromatic aldehydes and amides
Anary-Abbasinejad, Mohammad,Hassanabadi, Alireza,Heidari-Barfeh, Motahareh
experimental part, p. 478 - 480 (2010/12/25)
Reaction between aldehydes and amides catalysed by p-toluene sulfonic acid in microwave conditions provided a simple and efficient one-pot route for the synthesis of symmetrical bisamide derivatives in excellent yields.
P-toluene sulfonic acid-catalyzed, solvent-free synthesis of symmetrical bisamides by reaction between aldehydes and amides
Anary-Abbasinejad, Mohammad,Mosslemin, Mohammad H.,Hassanabadi, Alireza,Safa, Safiyeh Tajik
experimental part, p. 2209 - 2214 (2010/09/09)
Reaction between aldehydes and amides catalyzed by p-toluene sulfonic acid in solvent-free conditions provided a simple and efficient one-pot route for the synthesis of symmetrical bisamide derivatives in excellent yields. Copyrigh
