Mixed er-NHC/phosphine Pd(ii) complexes and their catalytic activity in the Buchwald–Hartwig reaction under solvent-free conditions

2019 ◽  
Vol 48 (10) ◽  
pp. 3447-3452 ◽  
Author(s):  
Alexandra A. Ageshina ◽  
Grigorii K. Sterligov ◽  
Sergey A. Rzhevskiy ◽  
Maxim A. Topchiy ◽  
Gleb A. Chesnokov ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solvent Free ◽  
Secondary Amines ◽  
Solvent Free Conditions ◽  
Primary And Secondary Amines

A single catalyst for solvent-free Buchwald–Hartwig amination with both primary and secondary amines.

scholarly journals N-Formylation of Anilines with Silica Sulfuric Acid under Solvent-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Davood Habibi ◽  
Payam Rahmani ◽  
Ziba Akbaripanah
Keyword(s):  
Sulfuric Acid ◽  
Formic Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
Secondary Amines ◽  
Silica Sulfuric Acid ◽  
Excellent Yield ◽  
Solvent Free Conditions ◽  
Primary And Secondary Amines

N-formylation of primary and secondary amines was carried out with formic acid in the presence of silica sulfuric acid under solvent-free conditions to give the corresponding formamides in excellent yield and short reaction times.

Sulphuric acid immobilized on silica gel (H2SO4–SiO2) as an eco-friendly catalyst for transamidation

RSC Advances ◽  
2015 ◽  
Vol 5 (14) ◽  
pp. 10567-10574 ◽  
Author(s):  
Sk. Rasheed ◽  
D. Nageswar Rao ◽  
A. Siva Reddy ◽  
Ravi Shankar ◽  
Parthasarathi Das
Keyword(s):  
Sulphuric Acid ◽  
Silica Gel ◽  
Solvent Free ◽  
Secondary Amines ◽  
Solvent Free Conditions ◽  
Primary And Secondary Amines ◽  
Novel Method

A novel method of transamidation of carboxamides with amines using catalytic amounts of H2SO4–SiO2 under solvent-free conditions has been developed. The scope of the methodology has been demonstrated with primary and secondary amines.

scholarly journals Microwave-assisted Aminolysis of Epoxides under Solvent-free Conditions Catalyzed by Montmorillonite Clay

1999 ◽  
Vol 23 (2) ◽  
pp. 128-129
Author(s):  
Mohammad M. Mojtahedi ◽  
Mohammad R. Saidi ◽  
Mohammad Bolourtchian
Keyword(s):  
Microwave Irradiation ◽  
Amino Alcohols ◽  
Solvent Free ◽  
Montmorillonite Clay ◽  
Secondary Amines ◽  
Microwave Assisted ◽  
Montmorillonite K10 ◽  
Solvent Free Conditions ◽  
Primary And Secondary Amines ◽  
High Yields

The reaction of primary and secondary amines with epoxides in the presence of montmorillonite K10 clay, under solvent-free condtions and microwave irradiation affords high yields of β-amino alcohols.

scholarly journals N-Hydroxyphthalimide Supported on Silica Coated with Ionic Liquids Containing CoCl2 (SCILLs) as New Catalytic System for Solvent-Free Ethylbenzene Oxidation

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 252 ◽  
Author(s):  
Gabriela Dobras ◽  
Kornela Kasperczyk ◽  
Sebastian Jurczyk ◽  
Beata Orlińska
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Fold Increase ◽  
Solvent Free ◽  
High Catalytic Activity ◽  
Ethylbenzene Oxidation ◽  
Solvent Free Conditions ◽  
Ft Ir ◽  
Tga Analysis ◽  
Ft Ir Spectroscopy

N-Hydroxyphthalimide was immobilized via ester bond on commercially available silica gel (SiOCONHPI) and then coated with various ionic liquids containing dissolved CoCl2 (SiOCONHPI@CoCl2@IL). New catalysts were characterized by means of FT IR spectroscopy, elemental analysis, SEM and TGA analysis and used in ethylbenzene oxidation with oxygen under mild solvent-free conditions (80 °C, 0.1 MPa). High catalytic activity of SiOCONHPI was proved. In comparison to a non-catalytic reaction, a two-fold increase in conversion of ethylbenzene was observed (from 4.7% to 8.6%). Coating of SiOCONHPI with [bmim][OcOSO3], [bmim][Cl] and [bmim][CF3SO3] containing CoCl2 enabled to increase the catalytic activity in relation to systems in which IL and CoCl2 were added directly to reaction mixture. The highest conversion of ethylbenzene was obtained while SiOCONHPI@CoCl2@[bmim][OcOSO3] were used (12.1%). Catalysts recovery and reuse was also studied.

N-Acyl-N-(4-chlorophenyl)-4-nitrobenzenesulfonamides: highly selective and efficient reagents for acylation of amines in water

2016 ◽  
Vol 71 (2) ◽  
pp. 95-104 ◽  
Author(s):  
Sara Ebrahimi ◽  
Safoura Saiadi ◽  
Simin Dakhilpour ◽  
Seyed Nezamoddin Mirsattari ◽  
Ahmad Reza Massah
Keyword(s):  
High Stability ◽  
Solvent Free ◽  
Secondary Amines ◽  
Primary Amines ◽  
Green Solvent ◽  
One Pot ◽  
Selective Protection ◽  
Solvent Free Conditions ◽  
Aryl Amines ◽  
Acylation Reactions

AbstractA variety ofN-acyl-N-(4-chlorophenyl)-4-nitrobenzenesulfonamides (1a–e) were synthesized in one pot from 4-chloroaniline under solvent-free conditions and have been developed as chemoselective N-acylation reagents. Selective protection of primary amines in the presence of secondary amines, acylation of aliphatic amines in the presence of aryl amines, and monofunctionalization of primary-secondary diamines as well as selective N-acylation of amino alcohols using these reagents are described. All of the acylation reactions were carried out in water as a green solvent. High stability and easy preparation of these acylating reagents are other advantages of this method.

ChemInform Abstract: The Catalytic Activity of Titania Nanostructures in the Synthesis of Amides under Solvent-Free Conditions.

ChemInform ◽  
2012 ◽  
Vol 43 (44) ◽  
pp. no-no
Author(s):  
Sangaraiah Nagarajan ◽  
Park Ran ◽  
Poovan Shanmugavelan ◽  
Murugan Sathishkumar ◽  
Alagusundaram Ponnuswamy ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Titania Nanostructures

The catalytic activity of titania nanostructures in the synthesis of amides under solvent-free conditions

2012 ◽  
Vol 36 (6) ◽  
pp. 1312 ◽  
Author(s):  
Sangaraiah Nagarajan ◽  
Park Ran ◽  
Poovan Shanmugavelan ◽  
Murugan Sathishkumar ◽  
Alagusundaram Ponnuswamy ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Titania Nanostructures
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