A novel, convenient, and efficient three-component reaction of benzoin derivatives,
1,3-dicarbonyls, and ammonium acetate in the presence of silica sulfuric acid (SSA)
is described for the synthesis of 2,3,4,5-tetrasubstituted pyrroles under solvent-free
conditions.
Key words
three-component reaction - silica sulfuric acid (SSA) - benzoin - 2,3,4,5-tetrasubstituted
pyrroles - 1,3-dicarbonyls