ChemInform Abstract: Michael Addition of Active Methylene Compounds to Chalcone Derivatives Using a Catalytic Amount of Iodine and K2CO3 at Room Temperature.

ChemInform ◽  
2011 ◽  
Vol 42 (33) ◽  
pp. no-no
Author(s):  
Yi-Ming Ren ◽  
Chun Cai
Keyword(s):  
Michael Addition ◽  
Room Temperature ◽  
Catalytic Amount ◽  
Chalcone Derivatives ◽  
Active Methylene Compounds ◽  
Active Methylene

Ionic-liquid-supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene — An efficient and recyclable organocatalyst for Michael addition to α,β-unsaturated ketones

2012 ◽  
Vol 90 (3) ◽  
pp. 290-297 ◽  
Author(s):  
Manoj Kumar Muthyala ◽  
Bhupender S Chhikara ◽  
Keykavous Parang ◽  
Anil Kumar
Keyword(s):  
Ionic Liquid ◽  
Michael Addition ◽  
Room Temperature ◽  
Significant Loss ◽  
Unsaturated Ketones ◽  
Ability To Act ◽  
Solvent Free Conditions ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
The Michael Addition

A novel ionic-liquid-supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene (IL–TBD) was synthesized and investigated for its ability to act as an active organocatalyst in the Michael addition of active methylene compounds and thiophenols to chalcones under solvent-free conditions. The IL–TBD afforded Michael addition products in excellent yields (82%–94%) at room temperature, and it was simply recycled and reused at least five times without significant loss of catalytic activity.

Potassium phosphate–ionic liquid mediated selective mono-Michael addition

2015 ◽  
Vol 39 (9) ◽  
pp. 6726-6729 ◽  
Author(s):  
Anand D. Sawant ◽  
Suryabala D. Jagadale ◽  
Uday V. Desai ◽  
Manikrao M. Salunkhe
Keyword(s):  
Ionic Liquid ◽  
Michael Addition ◽  
Room Temperature ◽  
Potassium Phosphate ◽  
Nmr Analysis ◽  
Active Methylene Compounds ◽  
Dosy Nmr ◽  
Active Methylene

A process for exclusive mono-Michael addition of active methylene compounds to conjugated esters, nitriles and ketones is developed. An ionic liquid-mediated reaction is carried out at room temperature. A reaction carried out at 60 °C resulted in a double-addition. A mechanism is proposed and supported by P31 and DOSY NMR analysis.

The remarkable catalytic activity of ultra-small free-CeO2 nanoparticles in selective carbon–carbon bond formation reactions in water at room temperature

2015 ◽  
Vol 39 (7) ◽  
pp. 5350-5353 ◽  
Author(s):  
Subhash Banerjee
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Bond Formation ◽  
Ceo2 Nanoparticles ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Reusable Catalyst ◽  
Carbon Carbon Bond ◽  
Active Methylene Compounds ◽  
Active Methylene

A simple and efficient protocol for selective bis-Michael addition and mono-allylation of active methylene compounds has been demonstrated using ultra-small size (∼5 nm) uncapped cerium oxide nanoparticles (free-CeO2 NPs) as a reusable catalyst in water at room temperature.

A Mild, Efficient, and Green Procedure for Michael Addition of Active Methylene Compounds to Chalcones Under Microwave Irradiation

2005 ◽  
Vol 35 (2) ◽  
pp. 325-332 ◽  
Author(s):  
Satya Paul ◽  
Monika Gupta ◽  
Parvinder Pal Singh ◽  
Rajive Gupta ◽  
André Loupy
Keyword(s):  
Microwave Irradiation ◽  
Michael Addition ◽  
Active Methylene Compounds ◽  
Green Procedure ◽  
Active Methylene

On-water magnetic NiFe2O4 nanoparticle-catalyzed Michael additions of active methylene compounds, aromatic/aliphatic amines, alcohols and thiols to conjugated alkenes

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 95951-95956 ◽  
Author(s):  
Soumen Payra ◽  
Arijit Saha ◽  
Subhash Banerjee
Keyword(s):  
Michael Addition ◽  
Aliphatic Amines ◽  
Reusable Catalyst ◽  
Michael Additions ◽  
Active Methylene Compounds ◽  
Active Methylene

Here, we have demonstrated Michael addition of active methylene compounds, aromatic/aliphatic amines, thiols and alcohols to conjugated alkenes using magnetic nano-NiFe2O4 as reusable catalyst in water.

Sign in / Sign up

Export Citation Format

Share Document