1- ethyl ethers protect alcohols

The United States Environmental Protection Agency (U.S. EPA) has identified several hundred MTBE-contaminated sites that have performed treatment of soil and groundwater to remove or destroy MTBE.1 Many of these sites have also treated other fuel components, primarily benzene, toluene, ethylbenzene, and xylene (BTEX), and some have treated fuel oxygenates other than MTBE. Although others have reported about treatment technologies for MTBE cleanup,2 only limited information has been published about cleanup of other oxygenates. These oxygenates include ether compounds, such as ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), diisopropyl ether (DIPE), and tert-amyl ethyl ether (TAEE), as well as alcohol compounds, such as tert-butyl alcohol (TBA), tert-amyl alcohol (TAA), ethanol, and methanol. 

The selective cleavage of the IV-t-butoxycarbonyl group in the presence of TBDMS (t-butyldimethylsilyl) (selective only when the protected alcohol was phenolic) or TBDPS (ferf-butyldiphenylsilyl) (completely selective) ethers can be achieved68 using a saturated solution of HC1 in ethyl acetate. 

Ethylenedithio)pentanoate esters, to protect alcohols, 97-98 Ethyl enol ethers, to monoprotect dicarbonyls, 220... 

Methoxytetrahydrothiopyranyl S, S-dioxido ethers, to protect alcohols, 34-35 4-Methoxytetrahydrothiopyranyl ethers, to protect alcohols, 34-35 1-Methyl-l-(adamantyl)ethyl carbamates, to protect amines, 326... 

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