42006-80-4Relevant academic research and scientific papers
Silica triflate as an efficient reagent for the chemoselective formylation of alcohols
Shirini, Farhad,Marjani, Katayoun,Nahzomi, Hossein Taherpour,Zolfigol, Mohammad Ali
, p. 1245 - 1251 (2007)
Silica triflate, as a new and stable silica-based reagent, is prepared by a reaction of silica gel with trifluoromethane sulfonyl chloride at room temperature. This reagent can be used for the efficient and selective formylation of alcohols in the presence of phenols in a relatively short reaction time and high yields under heterogeneous reaction conditions.
Efficient acetylation and formylation of alcohols in the presence of Zr(HSO4)4
Shirini, Farhad,Zolfigol,Safari
, p. 154 - 156 (2007/10/03)
Acetylation and formylation of alcohols with acetic and formic acids have been carried out in the presence of catalytic amounts of Zr(HSO 4)4 under mild and heterogeneous conditions.
Acetylation and formylation of alcohols in the presence of silica sulfuric acid
Shirini, Farhad,Zolfigol, Mohammad Ali,Mohammadi, Kamal
, p. 1617 - 1621 (2007/10/03)
Alcohols are converted to esters in a mild, clean, and efficient reaction with acetic and formic acids in the presence of silica sulfuric acid. All reactions were performed under mild and completely heterogeneous conditions in refluxing n-hexane.
Tf2O/Amide adducts: Versatile reagents for the synthesis of imidates and amidines
Sforza, Stefano,Dossena, Arnaldo,Corradini, Roberto,Virgili, Eliana,Marchelli, Rosangela
, p. 711 - 714 (2007/10/03)
The Vilsmeier reagents generated from tertiary and secondary aliphatic and aromatic amides and trifluoromethanesulfonic anhydride (Tf2O) reacted with different nucleophiles (ROH, RSH, RNH2) affording the relative iminium and amidinium salts. The former, stable at room temperature, were easily transformed into the corresponding esters or O-alkyl thioesters by treatment with OH- or SH-.
OXIDATIVE SUBSTITUTION OF PhTe AND PhSe MOIETIES IN ALKYL PHENYL TELLURIDES AND SELENIDES LEADING TO ESTERS AND ALCOHOLS
Hirai, Yasuyuki,Ohe, Kouichi,Toshimitsu, Akio,Uemura, Sakae
, p. 173 - 176 (2007/10/02)
Oxidation of alkyl phenyl tellurides and/or selenides with sodium periodate (NaIO4) in aqueous acetic acid or with metachloroperbenzoic acid (MCPBA) in N,N-dimethylformamide or N,N-dimethylacetamide affords a mixture of the corresponding alkyl esters (acetates or formates) and/or alcohols in 20-94percent yield under mild conditions (at 20-80 deg C for 0.5-24 h).
