Lewis Acid Promoted Reactions. (IV.)1a,bOxidation Deprotection of Trimethylsilyl Ethers with Silver and Sodium Bromates; AgBrO3, NaBrO3

Abstract
Primary and secondary benzylic and saturated trimethylsilyl ethers are converted to their carbonyl compounds with AgBrO3/AlCl3 efficiently. p-Hydroquinonetrimethylsilyl ether is also converted with both AgBrO3/AlCl3 and NaBrO3/AlCl3 to p-benzoquinone. AgBrO3/AlCl3 is also able to oxidize primary trimethylsilyl ethers to their carboxylic acids. Primary and secondary benzylic trimethylsilyl ethers are also converted to their carbonyl compounds with NaBrO3/AlCl3; AgBrO3 is more efficient and selective oxidant than NaBrO3.