This review recapitulates all available literature dealing with the synthesis and reactivity of
geminal organic di-and triazides. These compound classes are, to a large extent …

A variety of alcohols and aldehydes were reacted with acetic anhydride at room temperature
in the presence of a catalytic amount of lithium triflate (LiOTf) to produce the corresponding …

We introduce a simple and efficient procedure for preparation of (1-H-3-methyl-imidazolium
hydrogen sulfate) as a Brönsted acidic ionic liquid using 1-methylimidazole in the presence …

Aromatic aldehydes are smoothly converted into the corresponding acylals in good yields in
the presence of 3–10mol% Bi (NO3) 3· 5H2O. Ketones are not affected under the reaction …

Rice husk ash (RHA), as a source of amorphous silica, was treated with chlorosulfonic acid
and sulfonated rice husk ash (RHA-SO3H) as a highly powerful solid acid catalyst was …

Aluminum dodecatungstophosphate (AlPW12O40) as an efficient heterogeneous inorganic
catalyst for the chemoselective synthesis of geminal diacetates (acylals) under solvent-free …

A simple and efficient procedure for the preparation of silica-bonded S-sulfonic acid
(SBSSA) by reaction of 3-mercaptopropylsilica (MPS) and chlorosulfonic acid in chloroform …

Aldehydes are chemoselectively converted into the corresponding gem-diacetates at
ambient temperature in high to quantitative yields using a catalytic amount of indium (III) …

P2O5/Al2O3 as an efficient heterogeneous catalyst for chemoselective synthesis of 1,1-diacetates
under solvent-free conditions - ScienceDirect Skip to main contentSkip to article Elsevier logo …

N-sulfonic acid poly (4-vinylpyridinium) chloride is easily prepared by the reaction of poly (4-
vinylpyridine) with neat chlorosulfonic acid. This reagent can be used as an efficient catalyst …