Solvent-free Oxidation of Alcohols by Silica Sulfuric Acid/Sodium Dichromate Dihydrate or Potassium Permanganate/Wet SiO2System

2004 ◽  
Vol 51 (3) ◽  
pp. 509-512 ◽  
Author(s):  
Bibi Fatemeh Mirjalili ◽  
Mohamad Ali Zolfigol ◽  
Abdolhamid Bamoniri ◽  
Amin Zarei
Keyword(s):  
Sulfuric Acid ◽  
Potassium Permanganate ◽  
Solvent Free ◽  
Silica Sulfuric Acid ◽  
Sodium Dichromate ◽  
Oxidation Of Alcohols ◽  
Free Oxidation

ChemInform Abstract: Silica Sulfuric Acid Mediated Acylation of Amines with 1,3-Diketones via C-C Bond Cleavage under Solvent-Free Conditions.

ChemInform ◽  
2016 ◽  
Vol 47 (8) ◽  
pp. no-no
Author(s):  
Ruiqiang Guo ◽  
Chuanlei Zhu ◽  
Zhe Sheng ◽  
Yanzhe Li ◽  
Wei Yin ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Bond Cleavage ◽  
Solvent Free ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions

scholarly journals Silica sulfuric acid: a reusable solid catalyst for one pot synthesis of densely substituted pyrrole-fused isocoumarins under solvent-free conditions

2013 ◽  
Vol 9 ◽  
pp. 2344-2353 ◽  
Author(s):  
Sudipta Pathak ◽  
Kamalesh Debnath ◽  
Animesh Pramanik
Keyword(s):  
Sulfuric Acid ◽  
Low Cost ◽  
Solvent Free ◽  
Primary Amines ◽  
Solid Catalyst ◽  
Silica Sulfuric Acid ◽  
Reaction Conditions ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Solvent Free Reaction

A convenient and efficient methodology for the synthesis of densely substituted pyrrole-fused isocoumarins, which employs solid-supported silica sulfuric acid (SSA) as catalyst, has been developed. When the mixture of ninhydrin adducts of acetylacetone/ethyl acetoacetate and primary amines was heated on the solid surface of SSA under solvent-free conditions, the pyrrole-fused isocoumarins were formed in good yields. This synthetic method has several advantages such as the employment of solvent-free reaction conditions without the use of any toxic reagents and metal catalysts, the ease of product isolation, the use of a recyclable catalyst, the low cost, the easy availability of the starting materials, and the excellent yields of products.

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.

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