QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
# Predict the major product of the following reaction:
**Q 8.8: Predict the major product of the following reaction:**
\begin{array}{ccc}
\uparrow & \xrightarrow{\text{major}} & \uparrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\uparrow & \downarrow \\
\end{array}
How do I figure this out and what is the answer?
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Answer
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Step 1: Identify the functional group and reagents
The given reaction involves a halogenation of an alkene. The reagent is a halogen, specifically bromine (Br2). The functional group in the reactant is a carbon-carbon double bond, which is a part of an alkene.
Step 2: Understand the mechanism of halogenation of alkenes
The halogenation of alkenes follows an electrophilic addition mechanism. The halogen molecule polarizes, forming a dipole where one atom gains a partial positive charge, and the other gains a partial negative charge. The partially positive atom then attacks the double bond in the alkene, forming a 3 -membered ring intermediate called a bromonium ion (in this case, since bromine is the halogen). The bromonium ion is then attacked by a nucleophile, usually the bromide ion (Br-), leading to the formation of the major product.
Final Answer
The major product of the halogenation reaction of the given alkene is the dibrominated compound, as shown above.
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