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$6.$ Phenylethanone is a fragrant compound that occurs naturally in fruits such as bananas and apples.

$($a$)$ Phenylethanone may be synthesised in a two$-$stage process from phenylethene:

$($i$)$ Draw the structural formula of the intermediate compound $[$X$].$

$[1]$

$($ii$)$ Outline why the intermediate compound. $[$X$].$ can exhibit stereoisomerism.

$[1]$

$($iii$)$ State the reagent required for the second stage of the synthesis, B$.$

$[1]$

$($iv$)$ Determine the compound that will be formed as a minor product in this two$-$stage synthesis, and outline why this will occur.

$[2]$

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