M3: L-5 Flashcards
1
Q
What is a chiral compound?
A
A compound that is not superimposable on its mirror image
2
Q
What is the relationship between a chiral compound and its mirror image?
A
Enantiomers
3
Q
What are the similarities/ differences between enantiomers?
A
- identical chemical and physical properties
- differ in interactions with other chiral compounds + direction of rotation of plan of polarised light
4
Q
What is the name for a 1:1 mixture of two enantiomers?
A
Race mate/ racemic mixture
5
Q
Are racemic mixtures optically active?
A
No
6
Q
What are the steps for designating a chiral carbon S or R?
A
- Identify the asymmetric C carbon
- Assign priorities to the four substituents
- Draw the structure of the molecule viewed Dow the bond from C to the lowest priority group
- If arrangement of the remaining bonds from 1-3 appears clockwise assign R configuration, if anticlockwise assign S
7
Q
What is the formula for determining the maximum number of diastereomers give the number of chiral carbons?
A
2^n
