Congratulations on your new job as a chemist at Little Rhody Chemicals and Plastics. The stockroom contains inorganic chemicals and common reagents that you may need, as well as acetylene and alcohols of four carbons or fewer. Your first assignment is to prepare meso-5,6-dibromodecane from the available resources by a series of steps that gives the product in reasonable yield with minimal by-products.

Your boss hands you a bottle of cyclohexane and asks you to prepare cyclohexyl methyl ether. She warns you that if there are any alkene impurities, the product will be rejected by the buyer. 

Finally, she offers you a Thanksgiving bonus if you can convert some vinylcyclohexane to ethynylcyclohexane.