Molybdate sulfuric acid (MSA): an efficient reusable catalyst for the synthesis of tetrahydrobenzo[4,5]imidazo[2,1-b]quinazolin-1(2H)-ones under solvent-free conditions and evaluation of their in vitro bioassay

RSC Advances ◽  
2015 ◽  
Vol 5 (15) ◽  
pp. 11423-11432 ◽  
Author(s):  
Mudumala Veeranarayana Reddy ◽  
Gangireddy Chandra Sekhar Reddy ◽  
Yeon Tae Jeong
Keyword(s):  
Sulfuric Acid ◽  
Anticancer Activity ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
In Vitro Bioassay ◽  
Product Yields ◽  
Solvent Free Conditions ◽  
Anti Oxidant

The attractive features of this methodology are green and easy workability with high product yields. All the title compounds have good to excellent anti-oxidant and anticancer activity.

Tetramethylguanidiniumchlorosulfonate ionic liquid (TMG IL): an efficient reusable catalyst for the synthesis of tetrahydro-1H-benzo[a]chromeno[2,3-c]phenazin-1-ones under solvent-free conditions and evaluation for their in vitro bioassay activity

2015 ◽  
Vol 39 (12) ◽  
pp. 9931-9941 ◽  
Author(s):  
Mudumala Veeranarayna Reddy ◽  
Koteswara Rao Valasani ◽  
Kwon Taek Lim ◽  
Yeon Tae Jeong
Keyword(s):  
Ionic Liquid ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
In Vitro Bioassay ◽  
Solvent Free Conditions

The scope and versatility of multi-component reaction has been demonstrated in this methodology are highly reactive, potent activity, ecologically cleaner route and reusability.

Facile and green synthesis of triarylmethanes using silica sulfuric acid as a reusable catalyst under solvent-free conditions

2011 ◽  
Vol 14 (10) ◽  
pp. 934-943 ◽  
Author(s):  
I. Mohammadpoor-Baltork ◽  
M. Moghadam ◽  
S. Tangestaninejad ◽  
V. Mirkhani ◽  
K. Mohammadiannejad-Abbasabadi ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Green Synthesis ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions

Synthesis of pyranopyrazoles, benzopyrans, amino-2-chromenes and dihydropyrano[c]chromenes using ionic liquid with dual Brønsted acidic and Lewis basic sites

2015 ◽  
Vol 69 (4) ◽  
Author(s):  
Davood Habibi ◽  
Atefeh Shamsian ◽  
Davood Nematollahi
Keyword(s):  
Ionic Liquid ◽  
Ambient Temperature ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Product Yields ◽  
Basic Sites ◽  
Solvent Free Conditions ◽  
Brönsted Acid ◽  
Acidic Sites ◽  
Hydrogen Sulphate

AbstractAn efficient ionic liquid with both Brønsted acidic and Lewis basic sites, namely 1,4-dimethyl-1- (4-sulphobutyl)piperazinium hydrogen sulphate (IL1), was synthesised and characterised. IL1 is a “green”, homogeneous and reusable catalyst for: i) the synthesis of pyranopyrazoles (Va-Vj) and benzopyrans (VIa-VIj and VIIa-VIIf) at ambient temperature under solvent-free conditions and ii) the synthesis of amino-2-chromenes (VIIIa-VIIIi and IXa-IXi) and dihyropyrano[c]chromenes (Xa- Xi) at 80◦C under solvent-free conditions. The reactions were rapid with excellent product yields. In addition, the double Brønsted acid, 1,4-dimethyl-1,4-bis(4-sulphobutyl)piperazinium hydrogen sulphate (IL2), was prepared to evaluate the cooperation efficiency of their Brønsted acidic and Lewis basic sites as compared with the double Brønsted acidic sites in IL1

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