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JEE Main levelSingle correct optionDifficulty 2 of 3o2179

Styrene ( $C X_{6} H X_{5} - CH = CH X_{2}$ ) is treated with $BH X_{3} \cdot THF$ and then $H X_{2} O X_{2} / NaOH$ . The major product is

A1-phenylethan-1-ol
B1-phenylethane-1,2-diol
C2-phenylethan-1-ol
Dacetophenone

Answer: C

Boron goes to the terminal, less hindered carbon, which is the anti-Markovnikov position. Oxidation gives

C X_{6} H X_{5} CH X_{2} CH X_{2} OH

, 2-phenylethan-1-ol.

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