Hydroboration reaction.

Explanation

### Step-by-Step Solution for Hydroboration Reaction

**Step 1: Understanding Hydroboration Reaction**
The hydroboration reaction involves the addition of boron and hydrogen across a double bond in an alkene. This reaction is characterized by the addition of boron (from B2H6) to the less substituted carbon atom of the alkene, following the anti-Markovnikov rule.

**Step 2: Reactants and Conditions**
The reaction typically involves:
- An alkene (e.g., CH2=CH2)
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