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In the presence of base, OH groups react at the 4-position to give heptafluoro-p-tolyl ethers, which have been used in the protection of estradiols. The phenolic OH can be selectively deprotected with NaOMe: J. Chem. Soc., Chem. Commun., 125 (1984); J. Chem. Res. (Synop.), 114 (1985); J. Chem. Soc., Perkin 1, 2413 (1991)./n
Hazard Statements: H225-H302-H331-H315-H319
Highly flammable liquid and vapour. Harmful if swallowed. Toxic if inhaled. Causes skin irritation. Causes serious eye irritation.
Precautionary Statements: P210-P261-P303+P361+P353-P305+P351+P338-P405-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid breathing dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.