How can I convert R-2-bromopentane to a Fisher projection?
1 Answer
Step 1. Draw the bond-line structure of 2-bromopentane.
Step 2. Convert this to a wedge-dash structure.
(a) Start by making the Br bond a wedge and the H bond a dash. We have a 50 % chance of getting it right.
(b) Assign configurations. This is the
Step 3. Draw the skeleton Fischer projection
To convert this to a Fischer projection, draw a vertical line of five carbon atoms, with C-1 at the top and a cross at C-2.
Step 4. Attach the H and the Br atoms to the correct sides of the cross.
We must look at the molecule from the upper right. This puts Br on the left and H on the right.
And we have our structure.