- Mesoporous sBa-15 silica catalyst functionalized with phenylsulfonic acid groups (SbA-15-ph-So3h) as efficient nanocatalyst for chemoselective thioacetalization of carbonyl compounds
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In this research a Nano acidic catalyst was prepared and its efficiency on thioacetalization of carbonyl compounds was examined. For this aim we used modified SBA-15 as support, which have been modified by phenolic and sulfonic acid. SBA-15 is a member of
- Sedrpoushan, Alireza,Ghazizadeh, Habibollah
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p. 112 - 118
(2017/01/18)
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- Silica phenyl sulfonic acid as a solid acid heterogeneous catalyst for chemoselective thioacetalization of carbonyl compounds and dethioacetalization under mild conditions
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Silica phenyl sulfonic acid (SPSA) is an effective catalyst for chemoselective thioacetalization of aldehydes in the presence of ketones under neutral conditions. In addition, a simple and an efficient procedure for deprotection of 1,3-dithianes and 1,3-dithiolanes of aromatic, aliphatic, and α,β-unsaturated aldehydes and ketones in the solvent-free to the corresponding parent carbonyl compounds was successfully carried out with SPSA in excellent yields.
- Veisi, Hojat,Sedrpoushan, Alireza,Zolfigol, Mohammad Ali,Mohanazadeh, Farajollah,Hemmati, Saba
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p. E204-E206
(2013/06/04)
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- Poly(N-bromobenzene-1,3-disulfonamide) and N,N,N′,N′- tetrabromobenzene-1,3-disulfonamide as a mild and efficient catalyst for chemoselective thioacetalization of carbonyl functions and transthioacetalization reactions
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Poly(N-bromobenzene-1,3-disulfonamide) and N,N,N′,N′- tetrabromobenzene-1,3-disulfonamide are effective catalysts for chemoselective dithioacetalization of aldehydes in the presence of ketones under neutral conditions.
- Veisi, Hojat,Ghorbani-Vaghei, Ramin,Dadamahaleh, Somayeh Akbari
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experimental part
p. 699 - 705
(2011/07/31)
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- 1,3-dibromo-5,5-dimethylhydantoin (DBH) as a mild and efficient catalyst for chemoselective thioacetalization of carbonyl compounds and dethioacetalization under mild conditions
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Hydantoin bromide is an effective catalyst for chemoselective thioacetalization of aldehydes in the presence of ketones under neutral conditions. In addition, a simple and efficient procedure for the deprotection of 1,3-dithianes and 1,3-dithiolanes of ar
- Veisi, Hojat,Amiri, Mostafa,Hamidian, Amir Hossein,Malakootikhah, Javad,Fatolahi, Leila,Faraji, Alireza,Sedrpoushan, Alireza,Maleki, Behrooz,Saremi, Shokufe Ghahri,Noroozi, Mohammad,Bahadoori, Fatemeh,Veisi, Somayeh
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experimental part
p. 689 - 696
(2010/06/19)
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- Silica-PCl5: A novel heterogenous catalyst for simple and efficient chemoselective protection of carbonyl compounds
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A simple, efficient and environmentally benign procedure has been developed for chemoselective protection of carbonyl compounds using the newly developed heterogeneous catalyst: Silica-PCl5. A variety of aldehydes and ketones were efficiently c
- Pandey, Lokesh Kumar,Pathak, Uma,Tank, Rekha,Mazumder, Avik
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experimental part
p. 167 - 171
(2010/07/05)
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- Chemoselective dithioacetalization of aldehydes using silica sulfuric acid as a reusable catalyst
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Silica sulfuric acid has been found to be an efficient and reusable catalyst for chemoselective dithioacetalization of aldehydes over ketones, in excellent yields.
- Pore,Desai, Uday V.,Mane,Wadgaonkar
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p. 1291 - 1295
(2007/10/03)
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- Superoxide induced deprotection of 1,3-dithiolanes: A convenient method of dedithioacetalization
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Tetraethylammonium superoxide, generated in situ by the phase transfer reaction of potassium superoxide and tetra-ethylammonium bromide, brings about an easy deprotection of a variety of 1,3-dithiolanes of carbonyl compounds under significantly mild reaction conditions at room temperature.
- Shukla, Ajay Kumar,Verma, Manjusha,Singh, Krishna Nand
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p. 1748 - 1752
(2007/10/03)
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- Comparative radioprotective activity of various pentagonal compounds with two heteroatomes
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Various heterocyclic compounds with two heteroatomes were synthesized and their potential radioprotective activity was tested. This study shows the interest of phenylthiazolidines derivatives in chemical radioprotection.
- Robbe,Fernandez,Dubief,et al.
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p. 235 - 243
(2007/10/02)
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