Problems and exercisesThe synthon
Exercise 1
Classify the following synthons in Seebach's d/a notation: a) the carbon of an acylium ion; b) the α carbon of an enolate; c) the β carbon of methyl vinyl ketone as a Michael acceptor; d) an acyl anion.
Exercise 2
Disconnect 1,3-diphenylpropan-1-one at the C2–C3 bond and write the two possible pairs of synthons. Which one corresponds to real reagents?