5155

 

Propose a mechanism for the following rearrangement reaction.

 

 

 

 

5175

 

When 2,2-dimethylcyclohexanol is warmed with acid, the products shown below are obtained.  Propose a detailed mechanism to explain the formation of each of these products.

 

 

 

 

5177

 

The reaction shown below leads to a complex array of products.  Write a mechanism to account for each of the following products: