• Useful, easily handled oxidizing and nitrating agent in organic synthesis. Montmorillonite KSF acidic clay impregnated with bismuth nitrate was found to be an excellent reagent for high-yield aromatic nitration: Tetrahedron Lett., 41, 8017 (2000). Phenols can be nitrated with the salt itself in acetone, or without solvent: J. Org. Chem., 70, 9071 (2005). In the presence of montmorillonite, alcohols can be oxidized to carbonyl compounds: Synth. Commun., 31, 2691 (2001). Reagent for deprotection of oximes: Synthesis, 1010 (2001), and hydrazones: Synth. Commun., 32, 1917 (2001). Thioamides and thioureas are readily converted to their oxo-analogs: Tetrahedron Lett., 44, 591 (2003).
• Catalyst for a convenient, high-yield Michael addition of various substrates, including amines, imidazoles and indoles, to enones: J. Org. Chem., 68, 2109 (2003). Efficient catayst for tetrahydropyranylation and depyranylation of alcohols: Eur. J. Org. Chem., 4891 (2005).
• For a brief feature on uses of the reagent in organic synthesis, see: Synlett, 2699 (2005).