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Level 187

Resolution of Enantiomers


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What are enantiomers?
non-superimposable mirror images
levorotatory
refers to a compound that rotates the plane of polarized light to the left
dextrorotatory
refers to a compound that rotates the plane of polarized light to the right
What are diastereomers?
different chemical and physical properties, super imposable
add a resolving agent
How do you convert racemic mixtures to diastereomers?
Experiment
+/- 1 phenylethylamine is resolved using tartaric acid L (+) tartaric acid
slowly formed by (-) amine during experiment 4
How are the prism crystals formed? When were they formed?
by fast (+) and (-)
How are needle like crystals formed?
What does 10% NaOH convert?
Diastereomic salt to disodium tartate and S-(-) amine
What is a polarimeter?
The instrument used to measure the optical rotation of a compound
589.3 nm
What is the wavelength of D-line sodium?
CaCO3
calcium carbonate
What is plane polarized light?
waves vibrating in a single plane
0
What is the rotation of a racemic mixture?
specific rotation
Memorize the formula for
combine with another group
What do you do to make sure you have at least 4 mL of amine?