Question

An organic compound (A) of molecular formula C₃H₈O gives blue colour in Victor Meyer’s test. (A) on reaction with Cu at 573 K gives (B) which further reacts with Methyl magnesium bromide followed by acid hydrolysis yields (C) of molecular formula C₄H₁₀O. (C) on reaction with Cu at 573 K gives (D) of formula C₄H₈. Identify A, B, C, D and explain the reactions involved.

Answer 1

1. An organic compound gives blue colour in Victor Meyer’s test means it must be a secondary alcohol. From the formula, it is identified as

Propan – 2- ol (A)

2. Propan – 2 – ol on reaction with Cu at 573 K gives Propanone as (B).

3. Propanone on treatment with CH₃MgBr followed by acid hydrolysis will yield Tertiary butyl alcohol (CH₃)₃ C – OH as (C).

4. Tertiary butyl alcohol on reaction with copper at 573 K undergoes dehydration reaction to