“…Triphenylcarbenium tetrafluoroborate, also called trityl fluoroborate, is widely applied in organic reactions, 1 such as dehydrogenation, 2 deprotection of ketone acetals, 3 alkyl ethers, 4 oxidation of silyl enol ethers, 5 preparation of cationic organometallics 6 or organic complexes, 7 as a polymerization catalyst 8 and as a Lewis acid catalyst. 9 Trityl fluoroborate is a yellow solid (mp 200 °C dec.), which is soluble in most organic solvents, e.g., dichloromethane, tetrahydrofuran, and reacts with nucleophilic solvents, e.g., water.…”