“…24 Recently, we have introduced new methods for the oxidative deprotection of trimethylsilyl and tetrahydropyranyl ethers, ethylene acetals and ketals. [25][26][27] In continuation of our research in this area, we now report benzyltriphenylphosphonium peroxodisulfate as an efficient reagent for the conversion of TMS and THP ethers, ethylene acetals and ketals to their corresponding carbonyl compounds. For this purpose, first, we have studied the oxidative deprotection of 2-methoxybenzyltrimethylsilyl ether to 2-methoxybenzaldehyde with this reagent in common organic solvents such as MeCN, CH 2 Cl 2 , CHCl 3, THF and n-hexane.…”