Please clearly show work and the correct answer. Thank you.

4. [20 marks] Syntheses. Show ALL reagents and ALL intermediate compounds in your synthetic schemes. Routes with shortest and highest yield get perfect scores. Use Carbon Sources only from the following list, along with any needed reagents to make the compounds from a) to b). HC=CH the only allowed Carbons for your synthesis OH a) b) Obamasis ble (No typos here)