Alcohols, Phenols and Ethers Part 1

Compound B(C4H8O) reacts with hydroxylamine (NH2OH). So, compound B is an aldehyde or a ketone. Again, B does not give Tollen's test which indicates that B is a ketone but not an aldehyde. So, B is

CH3− O || C −CH2CH3

2−butan−one

(C4H8O)
Compound A(C4H8Cl2) is a dihalide which undergoes hot hydrolysis (H2O∕373K) to give B, a ketone. So, A is a non-terminal geminal or gem dichloride and A is

CH3− Cl | C | Cl −CH2CH3 (C4H8Cl2)

2,2−dichlorobutane

The reaction can be computed as,