Chapter 9, Problem 9.41SP

The following functional-group interchange is a useful synthesis of aldehydes.

1. a. What reagents were used in this chapter for this transformation? Give an example to illustrate this method.
2. b. This functional-group interchange can also be accomplished using the following sequence.

Propose mechanisms for these steps.

1. c. Explain why a nucleophilic reagent such as ethoxide adds to an alkyne more easily than it adds to an alkene.