• Wittig intermediate for formation of methyl alkenyl ketones. Efficient catalyst for protection and deprotection of alcohols, e.g. THP ethers are formed rapidly in DCM and cleaved in MeOH: Tetrahedron Lett., 40, 2389 (1999). Reagent for the acylation of alcohols, phenols, thiols and amines, and for 1,1-diacylation of alkdehydes under solvent-free conditions: Eur. J. Org. Chem., 2782 (2005).