MCQ
Propene is allowed to react with $\text{B}_2 , \text{D}_6$ and the product is treated with acetic acid. The final product obtained is :
- A$1-$ deuteriopropane
- ✓$2-$ deuteriopropane
- C$1-$ deuteriopropene
- D$2-$ deuteriopropene
✓
Answer
Correct option: B.
$2-$ deuteriopropane
This is an example of hydroboration reaction $($followed by hydrolysis$)$ in which diborane is isotopically labeled.
A molecule of $\text{HD}$ is added across the double bond of propene to form $2-$ deuteriopropane.
$\text{CH}_2\text{CHCH}_3\xrightarrow[\text{CH}_3\text{COOH}]{\text{B}_2\text{D}_6}\text{CH}_3−\text{CHDCH}_3$.
A molecule of $\text{HD}$ is added across the double bond of propene to form $2-$ deuteriopropane.
$\text{CH}_2\text{CHCH}_3\xrightarrow[\text{CH}_3\text{COOH}]{\text{B}_2\text{D}_6}\text{CH}_3−\text{CHDCH}_3$.
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