Catalytic demethylation of organosolv lignin in aqueous medium using indium triflate under microwave irradiation

2017 ◽  
Vol 119 ◽  
pp. 82-86 ◽  
Author(s):  
Jacob Podschun ◽  
Bodo Saake ◽  
Ralph Lehnen
Keyword(s):  
Microwave Irradiation ◽  
Aqueous Medium ◽  
Organosolv Lignin ◽  
Indium Triflate

scholarly journals Green Synthesis of Schiff Bases Derived from 4,5-Diazafluorene-9-one in Aqueous Medium Under Microwave Irradiation

2013 ◽  
Vol 25 (6) ◽  
pp. 3390-3392
Author(s):  
Hui Cang ◽  
Yu Lu ◽  
Wenyan Shi ◽  
Jingling Shao ◽  
Qi Xu
Keyword(s):  
Microwave Irradiation ◽  
Green Synthesis ◽  
Aqueous Medium ◽  
Schiff Bases

Reaction of Coumarin Derivatives with Nucleophiles in Aqueous Medium

2008 ◽  
Vol 63 (1) ◽  
pp. 71-76 ◽  
Author(s):  
Mazaahir Kidwai ◽  
Shweta Rastogi ◽  
Keyword(s):  
Microwave Irradiation ◽  
Aqueous Medium ◽  
Reaction Times ◽  
Parallel Synthesis ◽  
Synthetic Approach ◽  
Coumarin Derivatives ◽  
Green Catalyst ◽  
Unsaturated Ketones ◽  
Water As Solvent

A series of heterocycles was synthesized by the reaction of α,β -unsaturated ketones of benzopyrans or coumarins with various nucleophiles in aqueous medium bearing two points of diversity. Compared to an identical library generated by conventional parallel synthesis, a microwaveassisted procedure dramatically decreased reaction times from hours to minutes, and yields of products and intermediates were improved remarkably. This synthetic approach is ecofriendly in nature which features water as solvent, microwave irradiation, and usage of a “green” catalyst (K2CO3).

Degradation of Plant Cellulose by Microwave-Catalysis Coupling Technology

2011 ◽  
Vol 183-185 ◽  
pp. 8-12
Author(s):  
Li Guo Ma ◽  
De Sun ◽  
Ling He ◽  
Chang Hai Du
Keyword(s):  
Microwave Irradiation ◽  
Comparative Study ◽  
Aqueous Medium ◽  
Reaction Temperature ◽  
Cellulose Degradation ◽  
Reaction System ◽  
Conventional Heating ◽  
Degradation Reaction ◽  
Main Factors ◽  
Solution Acidity

The degradation reaction of cellulose under the condition of microwave irradiation in an acidic aqueous medium including H2O2 has been investigated. The main factors, the solution acidity, reaction temperature and time, can have an effect on the cellulose degradation. The cellulose oxidative degradable polymerization was associated mainly with the action of releasing from H2O2. The scheme reflecting the main pathways of cellulose degradation in the reaction system of HCl/ H2O2 is proposed. A comparative study was investigated to evaluate the effects of microwave and conventional heating on cellulose degradation.

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