How can I draw all possible stereoisomers for 1,3-dibromopentane?
1 Answer
Aug 27, 2015
Identify the chiral centres, then draw all possible answers.
Explanation:
Step 1. Draw the bond-line structure for 1,3-dibromopentane.
Step 2. Identify the chiral centres.
The only chiral centre is
Step 3. Calculate the number of possible stereoisomers.
The maximum number of stereoisomers is
Here,
Step 4. Draw the stereoisomers.
If we indicate the stereochemistry of the bonds to the heteroatoms by wedges and dashes, the structures are
Step 5. Check for meso isomers.
There is no internal plane of symmetry, so there are no meso isomers.
The above structures are both unique stereoisomers.