The Experts below are selected from a list of 41646 Experts worldwide ranked by ideXlab platform
Gholam Hossein Mahdavinia - One of the best experts on this subject based on the ideXlab platform.
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silica supported ammonium dihydrogen phosphate nh4h2po4 sio2 a mild reusable and highly efficient Heterogeneous Catalyst for the synthesis of 14 aryl 14 h dibenzo a j xanthenes
Chinese Chemical Letters, 2009Co-Authors: Shahnaz Rostamizadeh, Gholam Hossein Mahdavinia, Ali Mohammad Amani, Nasrin ShadjouAbstract:Abstract Silica supported ammonium dihydrogen phosphate (NH4H2PO4/SiO2) is found to be a recyclable Heterogeneous Catalyst for a rapid and efficient synthesis of various aryl-14-H-dibenzo[a,j]xanthenes with excellent yields under solvent-free conditions. The present methodology offers several advantages such as excellent yields, simple procedure, short reaction times and milder conditions.
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silica supported perchloric acid hclo4 sio2 a mild reusable and highly efficient Heterogeneous Catalyst for the synthesis of amidoalkyl naphthols
Chinese Chemical Letters, 2008Co-Authors: Gholam Hossein Mahdavinia, Mohammad A Bigdeli, Majid M HeraviAbstract:An efficient and direct procedure has been developed for the preparation of amidoalkyl naphthols by a one-pot condensation of aryl aldehydes, 2-naphthol and urea or amides, in the presence of HClO4–SiO2 as a Heterogeneous Catalyst. The reactions were carried out under reflux and solvent-free conditions. The present methodology offers several advantages such as excellent yields, simple procedure, easy work-up and ecofriendly reaction condition. The Catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.
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silica supported perchloric acid hclo4 sio2 a mild reusable and highly efficient Heterogeneous Catalyst for the synthesis of 14 aryl or alkyl 14 h dibenzo a j xanthenes
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Mohammad A Bigdeli, Majid M Heravi, Gholam Hossein MahdaviniaAbstract:Abstract Silica supported perchloric acid (HClO 4 -SiO 2 ) is found to be a recyclable Heterogeneous Catalyst for a rapid and efficient synthesis of various 14-aryl or alkyl-14- H -dibenzo[ a , j ]xanthenes with good to excellent yields under reflux and solvent free conditions. The Catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.
Mahmoud Nasrollahzadeh - One of the best experts on this subject based on the ideXlab platform.
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natrolite zeolite supported copper nanoparticles as an efficient Heterogeneous Catalyst for the 1 3 diploar cycloaddition and cyanation of aryl iodides under ligand free conditions
Journal of Colloid and Interface Science, 2015Co-Authors: Mahmoud Nasrollahzadeh, Mohammad S Sajadi, Akbar Rostamivartooni, Mehdi KhalajAbstract:In this paper, we report the preparation of Natrolite zeolite supported copper nanoparticles as a Heterogeneous Catalyst for 1,3-diploar cycloaddition and synthesis aryl nitriles from aryl iodides under ligand-free conditions. The Catalyst was characterized using XRD, SEM, TEM, EDS and TG-DTA. The experimental procedure is simple, the products are formed in high yields and the Catalyst can be recycled and reused several times without any significant loss of catalytic activity.
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green synthesis of the 1 substituted 1h 1 2 3 4 tetrazoles by application of the natrolite zeolite as a new and reusable Heterogeneous Catalyst
Green Chemistry, 2011Co-Authors: Davood Habibi, Mahmoud Nasrollahzadeh, Taghi A KamaliAbstract:An efficient method for the preparation of 1-substituted 1H-1,2,3,4-tetrazoles is reported using Natrolite zeolite as a natural and Heterogeneous Catalyst under solvent-free conditions. This method has the advantages of high yields, simple methodology and easy work-up. The Catalyst can be recovered by simple filtration and reused in good yields.
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silica supported ferric chloride fecl3 sio2 an efficient and recyclable Heterogeneous Catalyst for the preparation of arylaminotetrazoles
Synthetic Communications, 2010Co-Authors: Davood Habibi, Mahmoud NasrollahzadehAbstract:An efficient method for preparation of 5-arylamino-1H-tetrazole and 1-aryl-5-amino-1H-tetrazole derivatives is reported using FeCl3-SiO2 as an effective Heterogeneous Catalyst. Generally, when the substituent in arylcyanamide is a strongly electron-withdrawing group, the position of the equilibrium would shift toward 5-arylamino-1H-tetrazole, whereas with an electron-releasing substituent, the position of the equilibrium would shift toward 1-aryl-5-amino-1H-tetrazole.
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fecl3 sio2 as a reusable Heterogeneous Catalyst for the synthesis of 5 substituted 1h tetrazoles via 2 3 cycloaddition of nitriles and sodium azide
Tetrahedron Letters, 2009Co-Authors: Mahmoud Nasrollahzadeh, Davood Habibi, Yadollah Bayat, Saeed MoshaeeAbstract:Abstract An efficient method for the preparation of 5-substituted 1 H -tetrazole derivatives is reported using FeCl 3 –SiO 2 as an effective Heterogeneous Catalyst. This method has the advantages of high yields, simple methodology, and easy work-up. The Catalyst can be recovered by simple filtration and reused delivering good yields.
Liya Wang - One of the best experts on this subject based on the ideXlab platform.
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a new copper based metal organic framework as a promising Heterogeneous Catalyst for chemo and regio selective enamination of β ketoesters
ChemInform, 2014Co-Authors: Ying Zhao, Dongsheng Deng, Baoming Ji, Liya WangAbstract:A new metal-organic framework derived from Cu(II), 5-nitro-1,2,3-benzenetricarboxylic acid and a bis(triazolyl)propane is shown to be an efficient and recyclable Heterogeneous Catalyst for the highly selective enamination of β-ketoesters (I) (11 examples).
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a new copper based metal organic framework as a promising Heterogeneous Catalyst for chemo and regio selective enamination of β ketoesters
Chemical Communications, 2013Co-Authors: Ying Zhao, Dongsheng Deng, Baoming Ji, Liya WangAbstract:Assembly of 5-nitro-1,2,3-benzenetricarboxylic acid (H3nbta) with CuII in the presence of 1,3-bis(1,2,4-triazol-1-yl)propane (1,3-btp) leads to a new metal–organic framework, [Cu(Hnbta)(1,3-btp)]·2H2O (A1), which is shown to be an efficient and recyclable Heterogeneous Catalyst for enamination of β-ketoesters with excellent product yields and selectivity.
Jing Li - One of the best experts on this subject based on the ideXlab platform.
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a new layered metal organic framework as a promising Heterogeneous Catalyst for olefin epoxidation reactions
ChemInform, 2012Co-Authors: Jingming Zhang, Sanhita Pramanik, Thomas J. Emge, Tewodros Asefa, Ankush V Biradar, Jing LiAbstract:A novel cobalt complex is prepared and successfully applied as a Heterogeneous Catalyst for the epoxidation of alkenes (I).
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a new layered metal organic framework as a promising Heterogeneous Catalyst for olefin epoxidation reactions
Chemical Communications, 2012Co-Authors: Jingming Zhang, Sanhita Pramanik, Thomas J. Emge, Tewodros Asefa, Ankush V Biradar, Jing LiAbstract:A new layered MOF material [Co(Hoba)2·2H2O] (1) (H2oba = 4,4′-oxybis(benzoic acid)) has been synthesized and used as a highly recyclable Heterogeneous Catalyst for olefin epoxidation reactions. Both high conversion (96%) and high selectivity of epoxide products (96%) are achieved.
Mohammad A Bigdeli - One of the best experts on this subject based on the ideXlab platform.
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silica supported perchloric acid hclo4 sio2 a mild reusable and highly efficient Heterogeneous Catalyst for the synthesis of amidoalkyl naphthols
Chinese Chemical Letters, 2008Co-Authors: Gholam Hossein Mahdavinia, Mohammad A Bigdeli, Majid M HeraviAbstract:An efficient and direct procedure has been developed for the preparation of amidoalkyl naphthols by a one-pot condensation of aryl aldehydes, 2-naphthol and urea or amides, in the presence of HClO4–SiO2 as a Heterogeneous Catalyst. The reactions were carried out under reflux and solvent-free conditions. The present methodology offers several advantages such as excellent yields, simple procedure, easy work-up and ecofriendly reaction condition. The Catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.
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silica supported perchloric acid hclo4 sio2 a mild reusable and highly efficient Heterogeneous Catalyst for the synthesis of 14 aryl or alkyl 14 h dibenzo a j xanthenes
Journal of Molecular Catalysis A-chemical, 2007Co-Authors: Mohammad A Bigdeli, Majid M Heravi, Gholam Hossein MahdaviniaAbstract:Abstract Silica supported perchloric acid (HClO 4 -SiO 2 ) is found to be a recyclable Heterogeneous Catalyst for a rapid and efficient synthesis of various 14-aryl or alkyl-14- H -dibenzo[ a , j ]xanthenes with good to excellent yields under reflux and solvent free conditions. The Catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.