4. 2 steps. Use an organometallic reagent to add the additional carbon. 5, 2 conversions, 1 step each: Show both a Heck reaction and a Suzuki coupling reaction that would convert bromobenzene to vinylbenzene. Br Br 6. 3 steps: You can choose a 1-carbon compound to add the additional carbon. 3 steps: Only use chemistry that does not require extreme heat (such as >200°C), and you may choose an amine to use in your synthesis. 7. CH3 CH3 OH