Silica sulfuric acid: An efficient reusable heterogeneous catalyst for the synthesis of 2,3-dihydroquinazolin-4(1H)-ones in water and under solvent-free conditions

2008 ◽  
Vol 9 (5) ◽  
pp. 785-788 ◽  
Author(s):  
Minoo Dabiri ◽  
Peyman Salehi ◽  
Mostafa Baghbanzadeh ◽  
Mohammad Ali Zolfigol ◽  
Maria Agheb ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Heterogeneous Catalyst ◽  
Solvent Free ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions

Silica Sulfuric Acid as an Efficient Heterogeneous Catalyst for the Synthesis of 1,1-Diacetates under Solvent-Free Conditions.

ChemInform ◽  
2006 ◽  
Vol 37 (20) ◽  
Author(s):  
Abdol R. Hajipour ◽  
Amin Zarei ◽  
Leila Khazdooz ◽  
Bi Bi F. Mirjalili ◽  
Nafise Sheikhan ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Heterogeneous Catalyst ◽  
Solvent Free ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions ◽  
Efficient Heterogeneous Catalyst

scholarly journals Silica Sulfuric Acid as an Efficient Heterogeneous Catalyst for the Solvent-Free Synthesis of 1-Substituted 1H-1,2,3,4-Tetrazoles

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Davood Habibi ◽  
Hiva Nabavi ◽  
Mahmoud Nasrollahzadeh
Keyword(s):  
Sulfuric Acid ◽  
Heterogeneous Catalyst ◽  
Sodium Azide ◽  
Solvent Free ◽  
Triethyl Orthoformate ◽  
Primary Amines ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions ◽  
Solvent Free Synthesis ◽  
Efficient Heterogeneous Catalyst

Silica sulfuric acid (SSA) was found to be an efficient heterogeneous catalyst for the synthesis of 1-substituted 1H-1,2,3,4-tetrazoles from the reaction of primary amines with triethyl orthoformate and sodium azide under thermal and solvent-free conditions.

Silica Sulfuric Acid as an Efficient Heterogeneous Catalyst for the Synthesis of 1,1-Diacetates under Solvent-Free Conditions

Synthesis ◽  
2005 ◽  
Vol 2005 (20) ◽  
pp. 3644-3648 ◽  
Author(s):  
Abdol R. Hajipour ◽  
Amin Zarei ◽  
Leila Khazdooz ◽  
Bi Bi Mirjalili ◽  
Nafise Sheikhan ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Heterogeneous Catalyst ◽  
Solvent Free ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions ◽  
Efficient Heterogeneous Catalyst

scholarly journals Acetylation of Phenols, Anilines, and Thiols Using 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 ◽  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Solvent Free ◽  
Amino Group ◽  
Silica Sulfuric Acid ◽  
Solvent Free Conditions

Silica sulfuric acid was employed as a heterogeneous catalyst for the acetylation of a variety of phenols, amines, and thiols under solvent-free conditions at room temperature. Deactivated substrates also acetylated rapidly, and the method showed the preferential selectivity for acetylation of amino group in the presence of hydroxyl groupinwhich no C-acylation was observed.

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