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:

There are two scenarios and in either case, we start with 5-oxohexanal

1.	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:
Answer» 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: