91Ó°ÊÓ

Question: The Birch reduction is a dissolving metal reaction that converts substituted benzenes to cyclohexa-1,4-dienes using Li and liquid ammonia in the presence of an alcohol. Draw a stepwise mechanism for the following Birch reduction.

Question: In the $\mathit{C}{\mathit{r}}^{\mathbf{6}\mathbf{+}}$oxidation of cyclohexanols, it is generally true that sterically hindered alcohols react faster than unhindered alcohols. Which of the following alcohols should be oxidized more rapidly?

Question: Draw a stepwise mechanism for the following reaction.