Propose a synthesis of b-selinene, a member of a very common family of sesquiterpenes, beginning with the

Question:

Propose a synthesis of b-selinene, a member of a very common family of sesquiterpenes, beginning with the alcohol shown here. Use a nitrile in your synthesis. Inspection of a model may help you choose a way to obtain the desired stereochemistry. (Is the 1-methylethenyl group axial or equatorial?)

CH3 CH3 CH2 OH H H H2C CH3 B-Selinene