Question

Draw the final step of the mechanism and predict the major product obtained from the dehydration of 2,3-dimethyl-2-pentanol. Draw all the reactants and/or products in the appropriate boxes by placing atoms on the grid and connecting them with bonds and including charges where needed. Indicate the mechanism by drawing the electron-flow arrows on the molecules. Arrows should start on an atom or a bond and should end on an atom, bond, or where a new bond should be created.

Answer 1

Answer:

2,3-dimethylpent-2-ene is produced as major product

Explanation:

• Dehydration of alcohol gives alkene as product. Here a strong acid e.g. $H_{2}SO_{4}$ is used as dehydrating agent.
• Reaction mechanism for dehydration of alcohol involves a carbocation intermediate. Many possible alkenes can be produced from an unsymmetrical alcohol.
• Major product in dehydration of alcohol should contain most substituted double bond.
• Reaction mechanism for dehydration of 2,3-dimethyl-2-pentanol has been shown below.