Please explain and show me the answer for No 5 1. Draw the bromonium ion formed
ID: 693178 • Letter: P
Question
Please explain and show me the answer for No 5
1. Draw the bromonium ion formed in your reaction (shown below). Br O Hw OH OH Br2 ! trans-cinnamic acid 2,3-dibromo-3-phenylpropanoic acid 2. What is the role of acetic acid in this experiment? 3. Why is NMR a better spectroscopic technique than infrared to differentiate between the starting material and the product? 4. What are the advantages and disadvatages of using elemental bromine as opposed to pyridinium tribromide? Question 5. What contaminate could be in your product if it does not appear white at the end of thc isolation?Explanation / Answer
Answer:
2,3 dibromo-3-phenylpropanoic acid is pure white, if some red color persists, traces of bromine are still present and they must be efficiently removed which can be done by further washing with the methanol and other such reagents.