Compound 1 is shown.
Question: Consider the cyclic form of the sugar from which Compound 1 is derived. Can this sugar be classified as a hemiacetal?
My thought process:
1. A hemiacetal means that I am looking for an OH and OR attached to carbon 1.
2. That isn't present.
3. This is not a hemiacetal.
However, the answer is that the sugar from which compound 1 is derived IS in fact a hemiacetal. I assume this means the Br would originally be an OH. How can I backtrack to that logic?
Best regards, and thank you for your input.