1. Year 1 M Wills test 3 for first year 22nd November 2011.
Write your answers on a piece of paper. Write your name at the top of the paper.
Hand it in at the end of the lecture. It will be marked and returned to you later.
1) Add arrows to the following mechanism:
3 marks
2) Predict the product formed in the reaction below, and show a mechanism for its formation:
4 marks
Prof M Wills 1

2. 3) Predict the product formed in the reaction below, and show a mechanism for its formation:
3 marks
Prof M Wills 2

3. A very good
answer:

4. A surprisingly common error – remember that the H and the br
Are removed from ADJACENT carbons, not the same one.
A relatively minor error – antiperiplanar H is best one aligned for removal.