Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Naser Iranpoor"'
TiCl2(OTf)-SiO2 is simply prepared by immobilization of TiCl3(OTf) on silica gel surface and introduced as a non-hygroscopic Lewis acid catalyst for C-N and C-C bond formation via Michael addition reaction. A variety of structurally diverse nitrogen
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Publikováno v:
Journal of the Iranian Chemical Society. 5:400-406
Trimethylsilyl and tetrahydropyranyl ethers were easily converted into their corresponding bromides and iodides with high efficiency and selectivity by N-bromo- and N-iodosaccharins in the presence of triphenylphosphine under neutral conditions. The
Publikováno v:
Journal of Sulfur Chemistry. 28:581-587
Sulfonated charcoal was found to be an efficient heterogeneous catalyst for the acetylation of alcohols in acetic acid. Esterification of different carboxylic acids with different alcohols was also achieved with this catalyst. Acetylation and formyla
Publikováno v:
Journal of Sulfur Chemistry. 26:313-324
Zirconium tetrachloride/sodium iodide (ZrCl4/NaI) and ZrOCl2 · 8H2O/NaI conduct effective reductive coupling of sulfonyl chlorides to their corresponding disulfides and chemoselective reduction of sulfoxides to their thioethers in high yields.
Publikováno v:
Journal of Sulfur Chemistry. 26:133-137
An efficient and selective method is described for the conversion of 1° and 2° tetrahydro-pyranyl (THP) ethers to their corresponding thiocyanates and 3° ones to isothiocyanates using a triphenylphosphine/diethyl azodicarboxylate (DEAD)/NH4SCN rea
Publikováno v:
Advanced Synthesis & Catalysis. 347:655-661
Sodium dodecyl sulfate (SDS) catalyzes facile Michael additions of amines and thiols to α,β-unsaturated ketones under neutral micellar conditions to afford the corresponding Michael adducts in good to high yields.
Publikováno v:
Synthetic Communications. 34:2789-2795
Amberlite IRA‐400 supported phenoxide and naphthoxide anions are easily prepared. These polymer supported reagents that are highly air stable are used for the regioselective ring opening reactions of different epoxides to give aryl ether alcohols i
Publikováno v:
Synthetic Communications. 33:3671-3677
Structurally different benzylic alcohols were efficiently converted to their corresponding chlorides by silica chloride (SiO2-Cl) in CHCl3 at room temperature. Silica chloride is also able to convert benzylic alcohols to their iodides in the presence
Publikováno v:
Synthetic Communications. 33:3653-3660
Silica chloride (SiO2-Cl), as a heterogeneous reagent, has been used for the efficient dehydration of tertiary alcohols under mild reaction conditions. For comparison, we have also used trimethylsilyl chloride (TMSCl) as a homogeneous reagent for thi
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 178:1027-1035
Silica-chloride was reacted with different quantities of H(OCH 2 CH 2 ) n OH (n = 2-4) to furnish silica-based linear polyethylene glycols and cyclic polyethylene glycolic ethers. The N 2 O 4 complex of silica-tetraethylene glycolic ether ( III ) was