How would you obtain the following : (i) Benzoquinone from phenol. (ii) 2-Methylpropan-2-ol from methylmagnesium bromide. (iii) Propan-2-ol from propene.

How would you obtain the following : (i) Benzoquinone from phenol. (

1.	How would you obtain the following : (i) Benzoquinone from phenol. (ii) 2-Methylpropan-2-ol from methylmagnesium bromide. (iii) Propan-2-ol from propene.
Answer» SOLUTION :(i) Benzoquinone from phenol : Oxidation of phenol with chromic acid produces a congugated DIKETONE known as benzoquinone. (ii) 2-Methylpropan-2-ol from methylmagnesium bromide : `underset("Acetone")(CH_(3)-overset(CH_(3))overset("\|")"C "=O)+underset("bromide")underset("Methylmagnesium")(CH_(3)MgBr)rarr underset("(ADDITION compound)")(CH_(3)-underset(CH_(3))underset("\|")overset(CH_(3))overset("\|")"C "-OMgBr overset(H_(2)O)rarr underset("2-Methylpropan-2-ol")(CH_(3)-overset(CH_(3))overset("\|")underset(CH_(3))underset("\|")"C "-OH)+MG(OH)Br` (iii) Propan-2-ol from propene : This conversion can be accomblished as under : `underset("Propene")(CH_(3)-CH=CH_(2)+HI) rarr underset("2-Iodopropane")(CH_(3)-overset(I)overset(\|)CH-CH_(3))` `underset("2-Iodopropane")(CH_(3)-overset(I)overset(\|)CH-CH_(3)) overset(NaOH)rarr underset("Propan-2-ol")(CH_(3)-overset(OH)overset("\|")"CH"-CH_(3))`