The number of aldol reaction(s) that occurs in the given transformation is:
The structure of D-(+)-mannose is:
The structure of L-(–)-mannose is:
A+2H2O −−−−−→−2HCl HO−R|Si|R−OH
HO−R|Si|R−OH+HO−R|Si|R−OH→ B
Identify A and B