کتابخانه جامع آثار علمی

Silica Chloride/NaNO 2 as a Novel Heterogeneous System for Production of Thionitrites and Disulfides Under Mild Conditions

Mohammad Ali Zolfigol, Farhad Shirini, Arash Ghorbani Choghamarani, Efat Ghofrani

Phosphorus, sulfur, and silicon and the related elements Vol. 178, No. 7, 1477–1481

Thiols can be readily converted to their corresponding thionitrites with a combination of silica chloride ( I ), wet SiO 2 and sodium nitrite in dichloromethane at room temperature. Disulfides result from the homolytic cleavage of the sulfu…

Silica Sulfuric Acid/NaNO 2 as a Novel Heterogeneous System for the Chemoselective α-Nitrosation of β-Diketones Under Mild Conditions

Mohammad Ali Zolfigol, Arash Ghorbani Choghamarani

Phosphorus, sulfur, and silicon and the related elements Vol. 178, No. 7, 1623–1629

A combination of silica sulfuric acid and sodium nitrite in the presence of wet SiO 2 was used as an effective nitrosating agent for the nitrosation of g -diketones to their corresponding f -nitroso or f -oximinoketones under mild and heter…

An Efficient Method for the Oxidation of 1,4‐Dihydropyridines under Mild and Heterogeneous Conditions via in situ Generation of NOCl.

Mohammad Ali Zolfigol, Arash Ghorbani Choghamarani, Solmaz Dialameh, Majid M. Sadeghi, Iraj Mohammadpoor‐Baltork, Hamid Reza Memarian

ChemInform Vol. 34, No. 26

Abstract For Abstract see ChemInform Abstract in Full Text.

Solvent‐Free Oxidation of Thiols by (NH4)2Cr2O7 in the Presence of Mg(HSO4)2 and Wet SiO2.

Farhad Shirini, Mohammad Ali Zolfigol, B. Mallakpour, Iraj Mohammadpour‐Baltork, S. E. Mallakpour, Abdol R. Hajipour

ChemInform Vol. 34, No. 26

Abstract For Abstract see ChemInform Abstract in Full Text.

Trichloroisocyanuric Acid/NaNO2 as a Novel Heterogeneous System for the Selective Mononitration of Phenols under Mild Conditions.

Mohammad Ali Zolfigol, Ezat Ghaemi, Elaheh Madrakian

ChemInform Vol. 34, No. 19

Abstract For Abstract see ChemInform Abstract in Full Text.

Oxidation of Urazoles to Triazolinediones under Solvent‐Free Conditions Using Permanganate and Alumina‐Supported Permanganate.

Abdol R. Hajipour, Shadpour Mallakpour, Mohammad Ali Zolfigol, Hadi Adibi

ChemInform Vol. 34, No. 10

Abstract For Abstract see ChemInform Abstract in Full Text.

Solvent‐Free Crossed Aldol Condensation of Ketones with Aromatic Aldehydes Mediated by Magnesium Hydrogensulfate.

Peyman Salehi, Mohammad Mehdi Khodaei, Mohammad Ali Zolfigol, A. Keyvan

ChemInform Vol. 34, No. 8

Abstract For Abstract see ChemInform Abstract in Full Text.

Silica Sulfuric Acid/NaNO2 as a Novel Heterogeneous System for the Chemoselective N‐Nitrosation of Secondary Amines under Mild Conditions.

Mohammad Ali Zolfigol, Abdolhamid Bamoniri

ChemInform Vol. 34, No. 5

Abstract For Abstract see ChemInform Abstract in Full Text.

Trichloroisocyanuric Acid as a Novel Oxidizing Agent for the Oxidation of Urazoles under Both Heterogeneous and Solvent‐Free Conditions.

Mohammad Ali Zolfigol, Elaheh Madrakian, Ezat Ghaemi, Shadpour Mallakpour

ChemInform Vol. 34, No. 5

Abstract For Abstract see ChemInform Abstract in Full Text.

Catalytic Friedel–Crafts Acylation of Alkoxy Benzenes by Ferric Hydrogensulfate

Peyman Salehi, Mohammad Mahdi Khodaei, Mohammad Ali Zolfigol, Shahpour Zeinoldini

Synthetic Communications Vol. 33, No. 8, 1367–1373

Friedel–Crafts acylation of alkoxy benzenes is achieved efficiently by reaction with aliphatic acid anhydrides in the presence of catalytic amounts of ferric hydrogensulfate, Fe(HSO4)3, in nitromethane. Alkyl benzenes and aryl halides, as w…

Efficient Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones over Silica Sulfuric Acid as a Reusable Catalyst under Solvent-free Conditions

Peyman Salehi, Minoo Dabiri, Mohammad Ali Zolfigol, Mohammad Ali Bodaghi Fard

Heterocycles Vol. 60, No. 11, 2435–2435

3,4-Dihydropyrimidin-2(1H)-ones and their sulfur analogues are efficiently synthesized by the three-component condensation of β-dicarbonyl compounds, aromatic and aliphatic aldehydes, and urea or thiourea in the presence of catalytic amount…

Silica Sulfuric Acid: An Efficient Catalyst for the Direct Conversion of Primary and Secondary Trimethylsilyl Ethers to their Corresponding Ethers under Mild and Heterogeneous Conditions

Mohammad Ali Zolfigol, Iraj Mohammadpoor‐Baltork, BiBi Fatemeh Mirjalili, Abdolhamid Bamoniri

Synlett No. 12, 1877–1879

Primary and secondary trimethylsilyl ethers were converted to their corresponding ethers in the presence silica sulfuric acid with good to excellent yields under mild and heterogeneous conditions.

Trichloroisocyanuric Acid/NaNO2/wet SiO2as an Efficient System for the Selective Dinitration of Phenols under Solvent-free Conditions

Mohammad Ali Zolfigol, Elaheh Madrakian, Ezat Ghaemi

Synlett No. 14, 2222–2224

Dinitrophenols can be obtained via direct nitration of phenols with trichloroisocyanuric acid, NaNO2 and wet SiO2 at room temperature under solvent-free conditions with moderate to high yields.

Oxidation of alcohols using (NH4)2Cr2O4 in the presence of Al(HSO4)3 and wet SiO2

Farhad Shirini, Mohammad Ali Zolfigol, Masoumeh Abedini, Peyman Salehi

Mendeleev Communications Vol. 13, No. 6, 265–266

A mild and efficient method for the oxidation of alcohols by ammonium dichromate in the presence of Al(HSO4)3 and wet SiO2 in solution or under solvent-free conditions is reported.

Deprotection of 1,1‐Diacetates with [NO+×Crown×H (NO3)2‐].

Mohammad Ali Zolfigol, Mohammad Hassan Zebarjadian, Iraj Mohammadpoor‐Baltork, Mojtaba Shamsipur

ChemInform Vol. 33, No. 52, 84–84

Abstract For Abstract see ChemInform Abstract in Full Text.

Efficient Cleavage of Carbon—Nitrogen Double Bonds under Solvent‐Free Conditions.

Farhad Shirini, Mohammad Ali Zolfigol, Akram Pourhabib

ChemInform Vol. 33, No. 52, 63–63

Abstract For Abstract see ChemInform Abstract in Full Text.

Oxidative Removal of Acetal Protection by the Action of KHSO5 and AlCl3 under Mild Heterogeneous Conditions.

B. F. Mirjalili, Mohammad Ali Zolfigol, Abdolhamid Bamoniri

ChemInform Vol. 33, No. 50, 51–51

Abstract For Abstract see ChemInform Abstract in Full Text.

Silica Chloride/NaNO2 as a Novel Heterogeneous System for the Nitrosation of Secondary Amines under Mild Conditions.

Mohammad Ali Zolfigol, Farhad Shirini, Arash Ghorbani Choghamarani

ChemInform Vol. 33, No. 44, 67–67

Abstract For Abstract see ChemInform Abstract in Full Text.

Synthesis of morpholinated and 8-hydroxyquinolinated silica gel and their application to water softening

Mohammad Ali Zolfigol, Tayyebeh Madrakian, Ezat Ghaemi, Abbas Afkhami, Saeid Azizian, Shahrara Afshar

Green Chemistry Vol. 4, No. 6, 611–614

Morpholinated and 8-hydroxyquinolinated silica gel were obtained via reaction of silica chloride with morpholine and 8-hydroxyquinoline, respectively. The applicability of the synthesized reagents for softening of different water samples wa…

Oxidation of urazoles to triazolinediones under solvent-free conditions using permanganate and alumina-supported permanganate

Abdol R. Hajipour, Shadpour Mallakpour, Mohammad Ali Zolfigol, Hadi Adibi

Silica Sulfuric Acid/ NaNO2 as a Novel Heterogeneous System for the Nitration of Phenols under Mild Conditions

Mohammad Ali Zolfigol, Elaheh Madrakian, Ezat Ghaemi

Molecules Vol. 7, No. 10, 734–742

Nitrophenols can be obtained in moderate to high yields via nitrosationoxidation of phenols with silica sulfuric acid, NaNO2 and wet SiO2 at room temperature. In situ generation of HNO2 and a radical cation mechanism via the nitrous acid ca…

Deprotection of Acetals and Ketals by Silica Sulfuric Acid and Wet SiO2

BiBi Fathemeh Mirjalili, Mohammad Ali Zolfigol, Abdolhamid Bamoniri

Molecules Vol. 7, No. 10, 751–755

Neat chlorosulfonic acid reacts with silica gel to give silica sulfuric acid in which sulfuric acid is immobilized on the surface of silica gel via covalent bonds. A combination of silica sulfuric acid and wet SiO2 was used as an effective …

Silica modified sulfuric acid/NaNO2 as a novel heterogeneous system for the oxidation of 1,4-dihydropyridines under mild conditions

Mohammad Ali Zolfigol, Farhad Shirini, Arash Ghorbani Choghamarani, Iraj Mohammadpoor‐Baltork

Green Chemistry Vol. 4, No. 6, 562–564

A combination of silica modified sulfuric acid and sodium nitrite in the presence of wet SiO2 were used as an effective oxidizing agent for the oxidation of dihydropyridines to their corresponding pyridine derivatives under mild and heterog…

Trichloroisocyanuric Acid/NaNO2 as a Novel Heterogeneous System for the N‐Nitrosation of N,N‐Dialkylamines under Mild Conditions.

Mohammad Ali Zolfigol, Arash Ghorbani Choghamarani, Hassan Hazarkhani

ChemInform Vol. 33, No. 38, 52–52

Abstract For Abstract see ChemInform Abstract in Full Text.