How would you draw the four possible stereoisomers of 3-bromo-4-fluorohexane?

1 Answer
Dec 27, 2015

I would draw their Fischer projections.

Explanation:

1. Start by drawing four Fischer projection templates, with #"C-1"# at the top.

Templates

2. Now add the #"F"# atoms at #"C-4"#, with two to the right and two to the left.

F atoms

3. Next, add the #"Br"# atoms to #"C-3"#, alternating right-left-right-left.

Br atoms

4. Finally, add the missing #"H"# atoms to #"C-3"# and #"C-4"#.

Isomers

And you have your four stereoisomers.