How to convert bromomethane to propan-2-one
Answers
Explanation:
step 1->
CH3-Br + Mg -------> CH3MgBr (bromomethane) (dry ether).
step 2->
CH3-CHO
CH3MgBr + -------------->. CH3-CH-CH3
H3O+. |
OH
(propan-2-ol)
step 3->
PCC
CH3-CH-CH3 -----------> CH3-C-CH3
|. Cu(250°C) ||
OH. O
(propanone)
when bromomethane (CH3-Br) is reacted with magnesium metal (Mg) in presence of anhydrous ether, it forms methyl magnesium bromide (CH3MgBr).
and when methyl magnesium bromide is reacted with acetaldehyde (CH3-CHO) followed by hydrolysis (H3O+) , it forms propan-2-ol.
after this propan-2-ol is oxidised in the presence of PCC or using copper metal at 250°C , therefore forming propan-2-one.
hope it helps you