I have the first part correct; however, I can't seem to understand what the 2nd part's answer is. I realize the water leaves, but then what?

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  • $\begingroup$ I changed the title of your question - completely. Don't get confused with the apparatus used to trap the water, look at the reactants instead. You have a diol and a ketone :) $\endgroup$ Mar 13, 2014 at 8:46
  • $\begingroup$ That is an interesting product. What is the reducing agent? Absent that, how does it proceed to preserve the chiral center? $\endgroup$
    – Uncle Al
    Mar 13, 2014 at 18:10

1 Answer 1


There was this guy who recently protected a ketone in the presence of an ester. You might have heard about him ;)


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