Hydroboration is a reaction in which the boron hydride acts as an electrophile, `R_2BH` adds to a carbon - carbon double which acts as a nucleophile

Organoborane compound The organoborane compound then is oxidised by treatment with hydrogen peroxide in aqueous sodium hydroxide to from alcohol. The OH group enters the carbon atom from the same side where the boron atom was present. Hence this reaction is highly regioselective and the boron atom attacheto that carbon atom which is less sterically hindred.
Hydroboration oxidation and acid hydration will not give the same products in case of

Options

A.
B.
C. `CH_2 = CH_2`
D. `CH_3CH=CH-CH_3 `

Answer

A

Explanation

Hydroboration oxidation method acid hydration method will gives same alcohol in case of symmetrical alkenes. Unsymmetrical alkenes gives different products if (B), (C), (D) are symmetrical alkenes. (A) unsymmetrical alkenes