ChemInform Abstract: Layered Double Hydroxide-Supported L-Methionine-Catalyzed Chemoselective O-Methylation of Phenols and Esterification of Carboxylic Acids with Dimethyl Carbonate: A “Green” Protocol.

ChemInform ◽  
2010 ◽  
Vol 41 (21) ◽  
pp. no-no
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Alagarsamy Sharmila ◽  
Kasi Pitchumani
Keyword(s):  
Carboxylic Acids ◽  
Layered Double Hydroxide ◽  
Dimethyl Carbonate ◽  
Green Protocol ◽  
Double Hydroxide

scholarly journals MgAl-Layered Double Hydroxide Solid Base Catalysts for Henry Reaction: A Green Protocol

2018 ◽  
Author(s):  
Magda H. Abdellattif ◽  
Mohamed Mokhtar
Keyword(s):  
Layered Double Hydroxide ◽  
Catalytic Efficiency ◽  
Mesoporous Structure ◽  
Product Yield ◽  
Solid Catalyst ◽  
Solid Base ◽  
Henry Reaction ◽  
Test Reaction ◽  
Green Protocol ◽  
Double Hydroxide

A series of MgAl-layered double hydroxide (MgAl-HT), the calcined form at 500oC (MgAlOx) and the re-hydrated one at 25oC (MgAl-HT-RH) were synthesized. Physicochemical properties of the catalysts were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM). Surface area of the as-synthesized, calcined and re-hydrated catalysts was determined by N2 physisorption at -196oC. CO2-teperature programmed desorption (CO2-TPD) was applied to determine the basic sites of catalysts. The catalytic test reaction was carried out using benzaldehyde and their derivatives with nitromethane and their derivatives. The Henry products (1-15) were obtained in a very good yield using MgAl-HT-RH catalyst either by conventional method at 90oC in liquid phase, or under microwave irradiation method. The mesoporous structure and basic nature of re-hydrated solid catalyst were responsible for their superior catalytic efficiency. The robust nature was determined by using the same catalyst for five times, where the product % yield was almost unchanged significantly.

The first example of catalytic N-oxidation of tertiary amines by tungstate-exchanged Mg–Al layered double hydroxide in water: a green protocol

2001 ◽  
pp. 1736-1737 ◽  
Author(s):  
B. M. Choudary ◽  
B. Bharathi ◽  
Ch. Venkat Reddy ◽  
M. Lakshmi Kantam ◽  
K. V. Raghavan
Keyword(s):  
Layered Double Hydroxide ◽  
Tertiary Amines ◽  
Green Protocol ◽  
Double Hydroxide

ChemInform Abstract: The First Example of Catalytic N-Oxidation of Tertiary Amines by Tungstate-Exchanged Mg-Al Layered Double Hydroxide in Water: A Green Protocol.

ChemInform ◽  
2010 ◽  
Vol 33 (2) ◽  
pp. no-no
Author(s):  
B. M. Choudary ◽  
B. Bharathi ◽  
Ch. Venkat Reddy ◽  
M. Lakshmi Kantam ◽  
K. V. Raghavan
Keyword(s):  
Layered Double Hydroxide ◽  
Tertiary Amines ◽  
Green Protocol ◽  
Double Hydroxide
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