| http://www.w3.org/ns/prov#value | - For example, the bis-Boc-protected pentafluoroethylketone 4 can be contacted with a suitable acid, e.g. hydrogen chloride, in the presence of a suitable ethereal solvent such as dioxane and the like, to give the ??-amine deprotected pentafluoroethylketone 6.
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