QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
**Question: What is the major product of the following reaction? What is the major product of the following sequence of reactions?**
Attachments
6 months agoReport content
Answer
Full Solution Locked
Sign in to view the complete step-by-step solution and unlock all study resources.
Step 1: Identify the starting material and the reagents for the reaction.
The starting material is 1 -pentyne (methyl 1 -pentyn- 1 -yl ether), and the reagents are HBr and benzene. The first step of the reaction is an electrophilic addition of HBr to the alkyne.
Step 2: Write the mechanism for the electrophilic addition of HBr to the alkyne.
The mechanism for the electrophilic addition of HBr to the alkyne involves the formation of a cyclic bromonium ion intermediate. The bromonium ion is attacked by the nucleophile, Br-, leading to the formation of a vicinal dibromide. This reaction is followed by dehydrobromination, which forms a double bond and releases a molecule of HBr.
Final Answer
The major product of the reaction sequence is 1 -phenyl- 1 -pentene.
Need Help with Homework?
Stuck on a difficult problem? We've got you covered:
- Post your question or upload an image
- Get instant step-by-step solutions
- Learn from our AI and community of students