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Q.
Identify $X$ :
NTA AbhyasNTA Abhyas 2022
Solution:
An alkene reacts with diborane/THF to produce an alkyl borane. Oxidation and hydrolysis of the alkyl borane with hydrogen peroxide and base yield alcohol. Hydroboration $R=2-$ methylcyclopentyl Oxidation
In the first step, boron and hydrogen undergo syn addition to the alkene; in the second step, treatment with hydrogen peroxide and base replaces the boron with $-OH$ with retention of configuration. The net addition of $-H$ and $-OH$ occurs with anti-Markovnikov regioselectivity and syn stereoselectivity.
