Prof M Wills1 Year 1 M Wills test 3 for first year 22nd November 2010. Write your answers on a piece...
4
Prof M Wills 1 Year 1 M Wills test 3 for first year 22nd November 2010. 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. ) Add arrows to the following mechanism: Ph H H Br Ph H Ph H Ph H E-alkene. Base: ct the product formed in the reaction below, and show a mechanism for its for R Br 2 R + Br Br R R Br Br R R Br Br R R Br Br or 3 marks 4 marks
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Transcript of Prof M Wills1 Year 1 M Wills test 3 for first year 22nd November 2010. Write your answers on a piece...
Prof M Wills 1
Year 1 M Wills test 3 for first year 22nd November 2010.
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:
PhH
H
Br
PhH
PhH
Ph H
E- alkene.
Base:
2) Predict the product formed in the reaction below, and show a mechanism for its formation:
RBr2R +
BrBr
RR
Br
Br
RR
Br
Br
RR
Br
Bror
3 marks
4 marks
Prof M Wills 2
3) Predict the product formed in the reaction below, and show a mechanism for its formation:
RHBrR +
H
RR
H
Br
RR
H
Br
3 marks
A very goodanswer:
A surprisingly common error – remember that the H and the brAre removed from ADJACENT carbons, not the same one.
A relatively minor error – antiperiplanar H is best one aligned for removal.
