Identify whether each of the following compounds can be made using a direct Friedel-Crafts alkylation or whether it is necessary to perform an acylation followed by a Clemmensen reduction to avoid carbocation rearrangements: This compound can be made using a direct Friedel-Crafts alkylation. Synthesis of this compound requires acylation followed by a Clemmensen reduction to avoid carbocation rearrangement. Synthesis of this compound requires acylation followed by a Clemmensen reduction to avoid carbocation rearrangement. This compound can be made using a direct Friedel-Crafts alkylation. Synthesis of this compound requires acylation followed by a Clemmensen reduction to avoid carbocation rearrangement. This compound can be made using a direct Friedel-Crafts alkylation. Synthesis of this compound requires acylation followed by a Clemmensen reduction to avoid carbocation rearrangement. This compound can be made using a direct Friedel-Crafts alkylation