c) Use the scheme below to show the role of a "blocking group" in the synthesis of aromatic compounds. Clearly indicate under which conditions the group is introduced and removed. CH3 Compound A several steps (5) d) The scheme below shows that compound A gets converted to its diazonium salt which is then reacted with compound to give an azo compound. Diazonium salt of compound A OR CH3 Compound B COH CI i. In the formation of an azo compound is the diazonium salt likely to act as the nucleophile or electrophile. Give reason for your answer. ii. Which of the two structures shown below is compound B likely to be? Indicate which of its properties allow it to react with the diazonium salt. iii. Draw the structure of compound A. COzH (4+5) Semester 1: 2022/20