Solid acids: Green alternatives for acid catalysis - ScienceDirect Skip to main contentSkip to
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In 1980 sulfamic acid and its N-substituted derivatives were reviewed in Chemical Reviews,
1 effectively updating an earlier 1940 review 2 also in Chemical Reviews. In 1991 the …

Facile N-formylation of amines using Lewis acids as novel catalysts - ScienceDirect Skip to
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Zinc aluminate (ZnAl2O4) nanoparticles with an average particle size of about 8nm were
easily prepared by the co-precipitation method using aqueous ammonia solution as the …

Silica-bonded S-sulfonic acid (SBSSA) is employed as a recyclable catalyst for the
condensation reaction of aromatic aldehydes with 3-methyl-l-phenyl-5-pyrazolone. This …

An effective process for the green and rapid synthesis of biologically active polysubstituted
pyrroles and 1, 2, 4, 5-tetrasubstituted imidazoles derivatives using Cu@ imine/Fe3O4 …

Acid catalysis is widely used in the chemical industry, and nowadays many efforts are being
focused on replacing the more common homogeneous catalysts with heterogeneous ones …

Silica bonded N‐propyl sulfamic acid (SBNPSA) is employed as a solid acid catalyst for the
synthesis of 1, 8‐dioxo‐decahydroacridines and 1, 8‐dioxo‐octahydroxanthenes in high …

A simple and efficient procedure for the preparation of silica-bonded propylpiperazine-N-
sulfamic acid (SBPPSA) by the reaction of 3-piperazine-N-propylsilica (3-PNPS) and …

Silica‐bonded S‐sulfonic acid (SBSSA) has been found to be an efficient catalyst for the
synthesis of 1, 8‐dioxo‐decahydroacridines and 1, 8‐dioxo‐octahydroxanthenes in …