ChemInform Abstract: p-Toluene Sulfonic Acid-Catalyzed Microwave Synthesis of Symmetrical Bisamides by Reaction Between Aromatic Aldehydes and Amides.

ChemInform ◽  
2010 ◽  
Vol 42 (4) ◽  
pp. no-no
Author(s):  
Mohammad Anary-Abbasinejad ◽  
Alireza Hassanabadi ◽  
Motahareh Heidrari-Barfeh
Keyword(s):  
Microwave Synthesis ◽  
Sulfonic Acid ◽  
Aromatic Aldehydes ◽  
Toluene Sulfonic Acid ◽  
Acid Catalyzed

p-Toluene sulfonic acid-catalysed microwave synthesis of symmetrical bisamides by reaction between aromatic aldehydes and amides

2010 ◽  
Vol 34 (8) ◽  
pp. 478-480 ◽  
Author(s):  
Mohammad Anary-Abbasinejad ◽  
Alireza Hassanabadi ◽  
Motahareh Heidari-Barfeh
Keyword(s):  
Microwave Synthesis ◽  
Sulfonic Acid ◽  
Aromatic Aldehydes ◽  
Toluene Sulfonic Acid

p-Toluene Sulfonic Acid–Catalyzed, Solvent-Free Synthesis of Symmetrical Bisamides by Reaction Between Aldehydes and Amides

2010 ◽  
Vol 40 (15) ◽  
pp. 2209-2214 ◽  
Author(s):  
Mohammad Anary-Abbasinejad ◽  
Mohammad H. Mosslemin ◽  
Alireza Hassanabadi ◽  
Safiyeh Tajik Safa
Keyword(s):  
Sulfonic Acid ◽  
Solvent Free ◽  
Toluene Sulfonic Acid ◽  
Acid Catalyzed ◽  
Solvent Free Synthesis

ChemInform Abstract: p-Toluene Sulfonic Acid-Catalyzed Solvent-Free Synthesis of Symmetrical Bisamides by Reaction Between Aldehydes and Amides.

ChemInform ◽  
2010 ◽  
Vol 41 (51) ◽  
pp. no-no
Author(s):  
Mohammad Anary-Abbasinejad ◽  
Mohammad H. Mosslemin ◽  
Alireza Hassanabadi ◽  
Safiyeh Tajik Safa
Keyword(s):  
Sulfonic Acid ◽  
Solvent Free ◽  
Toluene Sulfonic Acid ◽  
Acid Catalyzed ◽  
Solvent Free Synthesis

Synthesis of 4-aryl-7-methyl-3,4-dihydropyrano[3,4-e][1,3]oxazine-2,5-dione in Aqueous Media

2016 ◽  
Vol 40 (12) ◽  
pp. 727-728 ◽  
Author(s):  
Allahbakhsh Abdollahi–Irandegan ◽  
Alireza Hassanabadi
Keyword(s):  
Organic Solvents ◽  
Sulfonic Acid ◽  
Present Method ◽  
Aqueous Media ◽  
Aromatic Aldehydes ◽  
Ring Formation ◽  
Green Process ◽  
Toluene Sulfonic Acid ◽  
Oxazine Ring ◽  
Novel Method

A novel method for oxazine ring formation is established using the reaction of 4-hydroxy-6-methyl-2H-pyran-2-one and aromatic aldehydes with methyl carbamate in the presence of p-toluene sulfonic acid (p-TSA) in aqueous media to afford 4-aryl-7-methyl-3,4-dihydropyrano[3,4-e][1,3]oxazine-2,5-dione in excellent yields. The present method does not involve any hazardous organic solvents and could therefore be considered a green process.

Unusualp‐Toluene Sulfonic Acid–Catalyzed Carbon–Carbon Bond Formation

2005 ◽  
Vol 35 (13) ◽  
pp. 1765-1768 ◽  
Author(s):  
Shanmugam Govindan ◽  
Madhavi Maddipatla ◽  
Anil Kumar Podichetty ◽  
Prabhakahr Macharla ◽  
Venu Nalivela ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Bond Formation ◽  
Carbon Bond ◽  
Carbon Carbon Bond ◽  
Toluene Sulfonic Acid ◽  
Acid Catalyzed

scholarly journals Bicyclic [1,3,4]Thiadiazolo[3,2-α]Pyrimidine Analogues: Novel One-Pot Three-Component Synthesis, Antimicrobial, and Antioxidant Evaluation

2021 ◽  
Vol 11 (5) ◽  
pp. 12925-12936
Keyword(s):  
Spectral Data ◽  
Elemental Analysis ◽  
Sulfonic Acid ◽  
Aromatic Aldehydes ◽  
One Pot ◽  
Antibacterial And Antifungal Activities ◽  
Toluene Sulfonic Acid ◽  
Antioxidant Evaluation ◽  
Pyrimidine Analogues ◽  
Antibacterial And Antifungal

A novel one-pot three-component synthesis of 1-(7-methyl-2,5-diphenyl-5H-[1,3,4]thiadiazolo(3,2-α)pyrimidine-6-yl)ethanone (4a-i) derivatives via cyclo-condensation of substituted 2-amino-[1,3,4]thiadiazole (1a-c), acetylacetone (2) and various aromatic aldehydes (3a-c) in the presence of p-toluene sulfonic acid (PTSA) in acetonitrile. Spectral data and elemental analysis have characterized the newly synthesized compounds. The new analogs were screened for their antibacterial and antifungal activities. The majority of the tested compounds displayed significant to moderate efficacy against most of the designated organisms. Among the tested compounds, 4b, 4e, and 4h showed noteworthy efficacy against selected microbes, and compounds 4c and 4i were found to be exceptionally efficient against selected fungal strains. Compound 4c, 4e, 4f, 4i were also designated as best antioxidants against NOx.

scholarly journals Deep eutectic solvents (DESs) as powerful and recyclable catalysts and solvents for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones

2019 ◽  
Vol 8 (1) ◽  
pp. 568-576 ◽  
Author(s):  
Yingna Cui ◽  
Changping Li ◽  
Ming Bao
Keyword(s):  
Catalytic Activity ◽  
Sulfonic Acid ◽  
Choline Chloride ◽  
Catalytic Efficiency ◽  
Aromatic Aldehydes ◽  
Deep Eutectic Solvents ◽  
Green Catalyst ◽  
Toluene Sulfonic Acid ◽  
Recyclable Catalysts ◽  
Main Factor

Abstract Deep eutectic solvents (DESs) are successfully used as powerful and recyclable catalysts and solvents for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones (DHPMs). The acidity of DESs is the main factor that determines catalytic activity. DESs, based on p-toluene sulfonic acid (PTSA) and choline chloride (ChCl), exhibits the highest catalytic activity. ChCl/2PTSA is suitable for a vast variety of aromatic aldehydes with electron-donating and electron-withdrawing groups, different β-diketonates, and urea or thiourea to obtain the corresponding DHPMs. Furthermore, DESs can be recycled easily after synthesis. The reused DESs achieve catalytic efficiency six times without significant changes. This study will provide a new green catalyst and efficient process for the synthesis of DHPMs.

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