Solvent free Oxidation of Thiols by (NH₄)₂Cr₂O₇ in the Presence of Mg(HSO₄)₂ and wet SiO₂

Abstract

A very simple and mild reaction for the efficient coupling of thiols by ammonium dichromate (ADC) in the presence of Mg(HSO4)2 and wet SiO2, under solvent free conditions, is reported.

Efficient Acetylation and Formylation of Alcohols in the Presence of Zr(Hso4)4

“…[31][32][33] Along these lines, we found that Zr(HSO 4 ) 4 can be used as an efficient reagent for the cleavage of C=N bonds in the presence of wet SiO 2 . [31][32][33] Along these lines, we found that Zr(HSO 4 ) 4 can be used as an efficient reagent for the cleavage of C=N bonds in the presence of wet SiO 2 .…”

Applications of Some Metal Hydrogen Sulfates in Organic Transformations

“…A combination of (NH 4 ) 2 Cr 2 O 7 , Mg(HSO 4 ) 2 and wet SiO 2 was also used for the oxidation of thiols to disulfides (Scheme 40) [59]. Comparison between the obtained results cleared that under solvent-free conditions, the reactions were completed at shorter reaction times with higher yields of the products.…”