scholarly journals EFFICIENT AND GREEN CATALYTIC SYNTHESIS OF DIHYDROPYRIMIDINONE (THIONE) DERIVATIVES USING COBALT NITRATE IN SOLVENT-FREE CONDITIONS

2014 ◽  
Vol 59 (1) ◽  
pp. 2311-2314 ◽  
Author(s):  
MASOUD NASR-ESFAHANI ◽  
MORTEZA MONTAZEROZOHORI ◽  
MARYAM AGHEL-MIRREZAEE ◽  
HASSAN KASHI
Keyword(s):  
Cobalt Nitrate ◽  
Catalytic Synthesis ◽  
Solvent Free ◽  
Solvent Free Conditions

Catalytic metallodendrimers grafted on mesoporous polymethacrylate beads for the regioselective synthesis of β-amino alcohols under solvent-free conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42526-42535 ◽  
Author(s):  
Richa Tiwari ◽  
Sachdeo H. Daware ◽  
Sandeep B. Kale
Keyword(s):  
Ambient Temperature ◽  
Amino Alcohols ◽  
Catalytic Synthesis ◽  
Solvent Free ◽  
Regioselective Synthesis ◽  
Solvent Free Conditions

Metallodendrimer-grafted mesoporous polymethyacrylate beads for the regioselective, solvent-free, efficient and scalable catalytic synthesis of β-amino alcohols at ambient temperature.

Tungstate sulfuric acid: preparation, characterization, and application in catalytic synthesis of novel benzimidazoles

2012 ◽  
Vol 66 (7) ◽  
Author(s):  
Bahador Karami ◽  
Saeed Khodabakhshi ◽  
Zahra Haghighijou
Keyword(s):  
Sulfuric Acid ◽  
Ftir Spectroscopy ◽  
Condensation Reaction ◽  
Direct Synthesis ◽  
Catalytic Synthesis ◽  
Solvent Free ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solvent Free Conditions ◽  
Work Up

AbstractTungstate sulfuric acid (TSA) was prepared, characterized, and applied for direct synthesis of novel and known benzimidazoles through a condensation reaction of o-phenylenediamines with orthoesters under solvent-free conditions. TSA was characterized by powdered X-ray diffraction (XRD), X-ray fluorescence (XRF), and FTIR spectroscopy. This novel and eco-friendly method is very cheap and has many advantages such as excellent yields, recyclable and eco-friendly catalyst, and simple work-up procedure.

scholarly journals Ultrasound-assisted catalytic synthesis of acyclic imides in the presence of p-toluenesulfonic acid under solvent free conditions

2012 ◽  
Vol 77 (4) ◽  
pp. 415-421 ◽  
Author(s):  
Masoud Nasr-Esfahani ◽  
Morteza Montazerozohori ◽  
Najmeh Filvan
Keyword(s):  
Reaction Times ◽  
Thermal Conditions ◽  
Catalytic Synthesis ◽  
Solvent Free ◽  
Moderate Reaction ◽  
Toluenesulfonic Acid ◽  
Solvent Free Conditions ◽  
Ultrasound Assisted ◽  
Convenient Preparation ◽  
Ultrasonic Conditions

A rapid and convenient preparation of acyclic imides by the reaction of aliphatic and aromatic nitriles with acyclic carboxylic anhydride in the presence of catalytic amounts of p-toluenesulfonic acid under thermal or ultrasonic conditions is reported. The advantages of this procedure are moderate reaction times, good to excellent yields, use of inexpensive and ecofriendly catalyst. The reaction of nitriles with aliphatic anhydrides proceeds in thermal conditions, while by the use of ultrasound irradiations these reactions get accelerated.

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