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From what I know, good inorganic chlorinating agents, $\ce{SOCl2, PCl3, PCl5}$ are able to substitute a poorer leaving group (like $\ce{OH-}$) for chlorine. For example, for substitution of the hydroxyl group to a halide to form a haloalkane, we can't just use hydrogen halides (we can if we first...
Would it be on-topic to ask here why uric acid is not what I and many others would have guessed, i.e.
1,3,7,9-tetrahydropurine-2,6,8-trione
but rather is something many would find surprising, i.e.
7,9-dihydro-1H-purine-2,6,8(3H)-trione?
https://en.wikipedia.org/wiki/Uric_acid says it is the compl...
