Cyclohexanol 1,2-dibromocyclohexane synthesis

Suppose, for example, that we must synthesize 1,2-dibromocyclohexane from cyclohexanol, a cheap and readily available starting material. Because there is no way to accomplish this transformation in one step, this synthesis must have at least two steps. 

Cyclohexene is called a synthetic intermediate, or simply an intermediate, because it is the product of one step and the starting material of another. We now have a two-step sequence to convert cyclohexanol to 1,2-dibromocyclohexane. and the synthesis is complete. Take note of the central role of the alkene in this synthesis. 

---