Question

convert butylalcohol to propylalcohol.... little confusion in last step ​

Answer 1

FOR UR CONFUSION ✌️☺️

This can be achieved by the following series of reactions:

(1) Ethyl alcohol on complete oxidation gives acetic acid, CH3COOH.

(2) Acetic acid is neutarlised with lime (CaO) to get calcium acetate, (CH3COO)2Ca.

(3) Calcium acetate on dry distillation yields acetone, CH3COCH3.

(4) Acetone on treatment with methyl magnesium bromide (Grignard reagent) followed by hydrolysis gives tert-butyl alcohol, (CH3)3COH.

Hope it helps ✔️

Answer 2

see it requires removal of one C carbon atom to bring it from but to prop

now removal of Cl and attachment of hydrogen

to remove Cl you can use Na then continue with protonation and aq KOH

or direct substitution of KOH