When D-fructose is reduced with NaBH4/H3O+, alditols are produced. Which of the following compounds will give the same alditol on reduction with NaBH4/H3O+?
There are two scenarios and in either case, we start with 5-oxohexanal. A reagent or sequence of reactions "A" helps convert the substrate into 6-hydroxyhexan-2-one. On the other hand, a reagent or sequence of reactions "B" converts the starting compound into 5-hydroxyhexanal. A and B are: