Question $4$ please assist with $4\mathrm{.}14\mathrm{.}2$ and $4\mathrm{.}3$

$[20]$

$4\mathrm{.}1)$ Provide a brief explanation why the following compounds will not undergo Friedel Crafts alkylation or acylation:

$4\mathrm{.}2)$ Show how you would synthesize the following product from benzene

$(6)$

$4\mathrm{.}3)$ Propose a detailed mechanism for the reaction below

$(8)$