The Experts below are selected from a list of 10383 Experts worldwide ranked by ideXlab platform
Majid Ghashang - One of the best experts on this subject based on the ideXlab platform.
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preparation and application of perchloric acid supported on alumina al2o3 hclo4 to the synthesis of α α amidobenzyl β Naphthols
Chinese Journal of Chemistry, 2009Co-Authors: Hamid Reza Shaterian, Fahimeh Khorami, Azita Amirzadeh, Majid GhashangAbstract:Preparation of perchloric acid supported on alumina and its primary application as a solid supported heterogeneous catalyst to the synthesis of α-(α-amidobenzyl)-β-Naphthols by a one-pot, three-component condensation of benzaldehydes, β-Naphthol and acetamide or benzamide under thermal solvent-free conditions were described. The present methodology offers several advantages such as simple procedure, shorter reaction time, and excellent yields.
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silica supported perchloric acid hclo4 sio2 an efficient and recyclable heterogeneous catalyst for the one pot synthesis of amidoalkyl Naphthols
Tetrahedron, 2008Co-Authors: Hamid Reza Shaterian, Hossein Yarahmadi, Majid GhashangAbstract:Abstract An efficient and direct protocol for the preparation of amidoalkyl Naphthols employing a multi-component and one-pot condensation reaction of 2-Naphthol, aromatic aldehydes, and acetonitrile or acetamide in the presence of silica supported perchloric acid under solvent, solvent-free, and microwave irradiation conditions is described. The present protocol with HClO 4 –SiO 2 catalyst is superior to the recently reported catalytic methods. It is noteworthy that 1-amidomethyl-2-Naphthols can be converted into important ‘drug like’ 1-aminomethyl-2-Naphthol derivatives by amide hydrolysis.
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an efficient simple and expedition synthesis of 1 amidoalkyl 2 Naphthols as drug like molecules for biological screening
Bioorganic & Medicinal Chemistry Letters, 2008Co-Authors: Hamid Reza Shaterian, Hossein Yarahmadi, Majid GhashangAbstract:Abstract An efficient and direct protocol for the preparation of amidoalkyl Naphthols employing a multi-component, one-pot condensation reaction of β-Naphthol, aromatic aldehydes and acetamide in the presence of ferric hydrogensulfate under solvent, solvent-free and microwave conditions is described. The thermal solvent-free and microwave green procedures offer advantages such as shorter reaction times, simple work-up, excellent yield, recovery and reusability of catalyst. It is noteworthy that 1-amidomethyl-2-Naphthols can be converted into important biological ‘drug like’ active 1-aminomethyl-2-Naphthols derivatives by amide hydrolysis.
Qiang Zhang - One of the best experts on this subject based on the ideXlab platform.
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a one pot multicomponent reaction for synthesis of 1 amidoalkyl 2 Naphthols catalyzed by peg based dicationic acidic ionic liquids under solvent free conditions
Monatshefte Fur Chemie, 2011Co-Authors: Qiang ZhangAbstract:AbstractA mild and efficient method was developed for preparation of amidoalkyl Naphthols via one-pot three-component condensation of aldehydes with amides and 2-Naphthol in the presence of polyethylene glycol (PEG)-based dicationic acidic ionic liquid as a powerful catalyst under solvent-free conditions. Excellent yields, short reaction time, simple work-up, and reusable catalyst are advantages of this procedure.Graphical abstract[IMAGE]
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a one pot multicomponent reaction for synthesis of 1 amidoalkyl 2 Naphthols catalyzed by peg based dicationic acidic ionic liquids under solvent free conditions
Monatshefte Fur Chemie, 2011Co-Authors: Jun Luo, Qiang ZhangAbstract:A mild and efficient method was developed for preparation of amidoalkyl Naphthols via one-pot three-component condensation of aldehydes with amides and 2-Naphthol in the presence of polyethylene glycol (PEG)-based dicationic acidic ionic liquid as a powerful catalyst under solvent-free conditions. Excellent yields, short reaction time, simple work-up, and reusable catalyst are advantages of this procedure.
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a silica gel supported dual acidic ionic liquid an efficient and recyclable heterogeneous catalyst for the one pot synthesis of amidoalkyl Naphthols
Green Chemistry, 2010Co-Authors: Qiang ZhangAbstract:A supported dual acidic ionic liquid catalyst was prepared via anchoring 3-sulfobutyl-1-(3-propyltriethoxysilane) imidazolium hydrogen sulfate onto silica gel by covalent bonds. The novel immobilized acidic ionic liquid effectively catalyzed the one-pot synthesis of amidoalkyl Naphthols by the multicomponent condensation of aldehydes with 2-Naphthol and amides under solvent-free conditions. Moreover, the catalyst could be recycled six-times without a significant loss of catalytic activity.
Hamid Reza Shaterian - One of the best experts on this subject based on the ideXlab platform.
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preparation and application of perchloric acid supported on alumina al2o3 hclo4 to the synthesis of α α amidobenzyl β Naphthols
Chinese Journal of Chemistry, 2009Co-Authors: Hamid Reza Shaterian, Fahimeh Khorami, Azita Amirzadeh, Majid GhashangAbstract:Preparation of perchloric acid supported on alumina and its primary application as a solid supported heterogeneous catalyst to the synthesis of α-(α-amidobenzyl)-β-Naphthols by a one-pot, three-component condensation of benzaldehydes, β-Naphthol and acetamide or benzamide under thermal solvent-free conditions were described. The present methodology offers several advantages such as simple procedure, shorter reaction time, and excellent yields.
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silica supported perchloric acid hclo4 sio2 an efficient and recyclable heterogeneous catalyst for the one pot synthesis of amidoalkyl Naphthols
Tetrahedron, 2008Co-Authors: Hamid Reza Shaterian, Hossein Yarahmadi, Majid GhashangAbstract:Abstract An efficient and direct protocol for the preparation of amidoalkyl Naphthols employing a multi-component and one-pot condensation reaction of 2-Naphthol, aromatic aldehydes, and acetonitrile or acetamide in the presence of silica supported perchloric acid under solvent, solvent-free, and microwave irradiation conditions is described. The present protocol with HClO 4 –SiO 2 catalyst is superior to the recently reported catalytic methods. It is noteworthy that 1-amidomethyl-2-Naphthols can be converted into important ‘drug like’ 1-aminomethyl-2-Naphthol derivatives by amide hydrolysis.
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an efficient simple and expedition synthesis of 1 amidoalkyl 2 Naphthols as drug like molecules for biological screening
Bioorganic & Medicinal Chemistry Letters, 2008Co-Authors: Hamid Reza Shaterian, Hossein Yarahmadi, Majid GhashangAbstract:Abstract An efficient and direct protocol for the preparation of amidoalkyl Naphthols employing a multi-component, one-pot condensation reaction of β-Naphthol, aromatic aldehydes and acetamide in the presence of ferric hydrogensulfate under solvent, solvent-free and microwave conditions is described. The thermal solvent-free and microwave green procedures offer advantages such as shorter reaction times, simple work-up, excellent yield, recovery and reusability of catalyst. It is noteworthy that 1-amidomethyl-2-Naphthols can be converted into important biological ‘drug like’ active 1-aminomethyl-2-Naphthols derivatives by amide hydrolysis.
Abdolkarim Zare - One of the best experts on this subject based on the ideXlab platform.
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Highly Efficient Synthesis of 1-Thioamidoalkyl-2-Naphthols and 14-Aryl-14H-dibenzo[a,j]xanthenes using a Novel Ionic Liquid: Catalyst Preparation, Characterization and Performing the Reactions
Diponegoro University, 2018Co-Authors: Atefeh Saadat, Abdolkarim Zare, Fatemeh Jamadi, Maasoomeh Abdolalipour-saretoliAbstract:In this work, a novel Brønsted acidic ionic liquid namely triethylaminium-N-sulfonic acid trifluoroacetate {[TEASA][TFA]} has been synthesized by the reaction of NEt3 with ClSO3H, and then with CF3CO2H. The ionic liquid has been characterized by studying its spectroscopic data (1H and 13C NMR, FT-IR, and mass spectra). Afterward, it has been utilized as a highly effective and general catalyst to promote the following organic reactions in solvent-free conditions: (i) the production of 1-thioamidoalkyl-2-Naphthols from arylaldehydes, 2-Naphthol and thioacetamide, and (ii) the preparation of 14-aryl-14H-dibenzo[a,j]xanthenes from arylaldehydes and 2-Naphthol. It is noteworthy that [TEASA][TFA] has catalyzed the reactions under milder conditions relative to most of the reported methods. Moreover, it afforded the both products in higher yields with respect to most of the previous works. Copyright © 2018 BCREC Group. All rights reserved Received: 21st June 2017; Revised: 6th October 2017; Accepted: 9th October 2017; Available online: 11st June 2018; Published regularly: 1st August 2018 How to Cite: Saadat, A., Zare, A., Jamadi, F., Abdolalipour-Saretoli, M. (2018). Highly Efficient Synthesis of 1-Thioamidoalkyl-2-Naphthols and 14-Aryl-14H-dibenzo[a,j]xanthenes using a Novel Ionic Liquid: Catalyst Preparation, Characterization and Performing the Reactions. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (2): 204-212 (doi:10.9767/bcrec.13.2.1280.204-212
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design and characterization of nano silica bonded 3 n propyl 1 sulfonic acid imidazolium chloride nano sb psim cl as a novel heterogeneous and reusable catalyst for the condensation of arylaldehydes with β Naphthol and alkyl carbamates
Research on Chemical Intermediates, 2016Co-Authors: Abdolkarim Zare, Ahmad Reza Moosavizare, Maria Merajoddin, Mahmoud Zarei, Hassan M Beyzavi, Mohammad Ali ZolfigolAbstract:In this research, nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a new and efficient Bronsted acidic ionic liquid supported on silica has been synthesized, and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, thermogravimetric, differential thermal gravimetric, X-ray diffraction, and energy-dispersive X-ray spectroscopy spectra. The presented silica-supported ionic liquid has been applied as a highly effective, heterogeneous, easy regenerable, and reusable catalytic system for the solvent-free condensation of arylaldehydes with β-Naphthol and alkyl carbamates leading to α-carbamatoalkyl-β-Naphthols. Once the nanocatalyst was regenerated and reused, no significant loss of its activity was observed. Design and characterization of nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a novel, heterogeneous and reusable catalyst for the condensation of arylaldehydes with β-Naphthol and alkyl carbamates.
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discovery of an in situ carbocationic system using trityl chloride as a homogeneous organocatalyst for the solvent free condensation of β Naphthol with aldehydes and amides thioamides alkyl carbamates in neutral media
Tetrahedron, 2013Co-Authors: Ardeshir Khazaei, Mohammad Ali Zolfigol, Ahmad Reza Moosavizare, Abdolkarim Zare, Hamideh Kaveh, Vahid Khakyzadeh, Masoud Kazemrostami, Abolfath Parhami, Hossein TorabimonfaredAbstract:Abstract Trityl chloride (TrCl), efficiently catalyzes the one-pot multi-component condensation of β-Naphthol with aromatic aldehydes and amides/thioamides/carbamates such as acetamide, benzamide, nicotinamide, thioacetamide, and methylcarbamate under solvent-free and neutral conditions to afford 1-amido-alkyl-2-Naphthols, 1-thioamido-alkyl-2-Naphthols, and 1-carbamato-alkyl-2-Naphthols in high yields and very short reaction times. Mechanistically, it is interesting that trityl chloride through the in situ generation of trityl carbocation with inherent instability is efficient as a reusable homogeneous organocatalyst in neutral media.
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ionic liquid 1 3 disulfonic acid imidazolium hydrogen sulfate a novel and highly efficient catalyst for the preparation of 1 carbamatoalkyl 2 Naphthols and 1 amidoalkyl 2 Naphthols
RSC Advances, 2012Co-Authors: Abdolkarim Zare, Tahereh Yousofi, Ahmad Reza MoosavizareAbstract:In this work, a novel ionic liquid, 1,3-disulfonic acid imidazolium hydrogen sulfate {[Dsim]HSO4}, with a Bronsted acidic property, is synthesized, and used as a highly efficient, green, recyclable and homogeneous catalyst for the preparation of 1-carbamatoalkyl-2-Naphthols and 1-amidoalkyl-2-Naphthols under solvent-free and relatively mild conditions. The one-pot multi-component condensation of β-Naphthol with arylaldehydes and alkyl carbamates or amides affords the title compounds in high yields and in short reaction times.
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rapid synthesis of 1 amidoalkyl 2 Naphthols over sulfonic acid functionalized imidazolium salts
Applied Catalysis A-general, 2011Co-Authors: Mohammad Ali Zolfigol, Ardeshir Khazaei, Ahmad Reza Moosavizare, Abdolkarim Zare, Vahid KhakyzadehAbstract:Abstract Novel sulfonic acid functionalized imidazolium salts including 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl} (an ionic liquid), 1,3-disulfonic acid imidazolium chloride {[Dsim]Cl} (an ionic liquid) and 3-methyl-1-sulfonic acid imidazolium tetrachloroaluminate {[Msim]AlCl 4 } (a solid) efficiently catalyze one-pot multi-component condensation of β-Naphthol with aromatic aldehydes and amide derivatives under solvent-free conditions to afford 1-amidoalkyl-2-Naphthols in excellent yields (81–96%) and in very short reaction times (1–40 min).
Ahmad Reza Moosavizare - One of the best experts on this subject based on the ideXlab platform.
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design and characterization of nano silica bonded 3 n propyl 1 sulfonic acid imidazolium chloride nano sb psim cl as a novel heterogeneous and reusable catalyst for the condensation of arylaldehydes with β Naphthol and alkyl carbamates
Research on Chemical Intermediates, 2016Co-Authors: Abdolkarim Zare, Ahmad Reza Moosavizare, Maria Merajoddin, Mahmoud Zarei, Hassan M Beyzavi, Mohammad Ali ZolfigolAbstract:In this research, nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a new and efficient Bronsted acidic ionic liquid supported on silica has been synthesized, and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, thermogravimetric, differential thermal gravimetric, X-ray diffraction, and energy-dispersive X-ray spectroscopy spectra. The presented silica-supported ionic liquid has been applied as a highly effective, heterogeneous, easy regenerable, and reusable catalytic system for the solvent-free condensation of arylaldehydes with β-Naphthol and alkyl carbamates leading to α-carbamatoalkyl-β-Naphthols. Once the nanocatalyst was regenerated and reused, no significant loss of its activity was observed. Design and characterization of nano-silica-bonded 3-n-propyl-1-sulfonic acid imidazolium chloride {nano-SB-[PSIM]Cl} as a novel, heterogeneous and reusable catalyst for the condensation of arylaldehydes with β-Naphthol and alkyl carbamates.
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discovery of an in situ carbocationic system using trityl chloride as a homogeneous organocatalyst for the solvent free condensation of β Naphthol with aldehydes and amides thioamides alkyl carbamates in neutral media
Tetrahedron, 2013Co-Authors: Ardeshir Khazaei, Mohammad Ali Zolfigol, Ahmad Reza Moosavizare, Abdolkarim Zare, Hamideh Kaveh, Vahid Khakyzadeh, Masoud Kazemrostami, Abolfath Parhami, Hossein TorabimonfaredAbstract:Abstract Trityl chloride (TrCl), efficiently catalyzes the one-pot multi-component condensation of β-Naphthol with aromatic aldehydes and amides/thioamides/carbamates such as acetamide, benzamide, nicotinamide, thioacetamide, and methylcarbamate under solvent-free and neutral conditions to afford 1-amido-alkyl-2-Naphthols, 1-thioamido-alkyl-2-Naphthols, and 1-carbamato-alkyl-2-Naphthols in high yields and very short reaction times. Mechanistically, it is interesting that trityl chloride through the in situ generation of trityl carbocation with inherent instability is efficient as a reusable homogeneous organocatalyst in neutral media.
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ionic liquid 1 3 disulfonic acid imidazolium hydrogen sulfate a novel and highly efficient catalyst for the preparation of 1 carbamatoalkyl 2 Naphthols and 1 amidoalkyl 2 Naphthols
RSC Advances, 2012Co-Authors: Abdolkarim Zare, Tahereh Yousofi, Ahmad Reza MoosavizareAbstract:In this work, a novel ionic liquid, 1,3-disulfonic acid imidazolium hydrogen sulfate {[Dsim]HSO4}, with a Bronsted acidic property, is synthesized, and used as a highly efficient, green, recyclable and homogeneous catalyst for the preparation of 1-carbamatoalkyl-2-Naphthols and 1-amidoalkyl-2-Naphthols under solvent-free and relatively mild conditions. The one-pot multi-component condensation of β-Naphthol with arylaldehydes and alkyl carbamates or amides affords the title compounds in high yields and in short reaction times.
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rapid synthesis of 1 amidoalkyl 2 Naphthols over sulfonic acid functionalized imidazolium salts
Applied Catalysis A-general, 2011Co-Authors: Mohammad Ali Zolfigol, Ardeshir Khazaei, Ahmad Reza Moosavizare, Abdolkarim Zare, Vahid KhakyzadehAbstract:Abstract Novel sulfonic acid functionalized imidazolium salts including 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl} (an ionic liquid), 1,3-disulfonic acid imidazolium chloride {[Dsim]Cl} (an ionic liquid) and 3-methyl-1-sulfonic acid imidazolium tetrachloroaluminate {[Msim]AlCl 4 } (a solid) efficiently catalyze one-pot multi-component condensation of β-Naphthol with aromatic aldehydes and amide derivatives under solvent-free conditions to afford 1-amidoalkyl-2-Naphthols in excellent yields (81–96%) and in very short reaction times (1–40 min).
