Homework Answers
So, we are supposed to find the electrophilic and nucleophilic centers in this question.
In the given compound, we can deduce that these centers must be near the boron or the Lithium. So how do we decide?
Boron is bonded to 3 alkyl groups. Boron is known to form electron deficient compounds, and this case is no exception. There will be an electrophilic center on the boron.
In the case of Lithium, which is a highly electropositive element, the carbon which is bonded to the lithium will experience dipolar moment, becoming slightly electronegative. The negative charge induced on the carbon attached to Lithium makes the carbon a nucleophilic center.
The correct option is hence (a)
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