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organic chemistry lab experiment (post/Pre/modeling) organic chemistry lab experiment (post/Pre/modeling) organic chemistry lab experiment (post/Pre/modeling)
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Organic Modeling Lab V
Part V Stereoisomers
Name:
1 Draw two stereosiomers in fisher projection for 1-bromo-1-chloroethane
Fisher projection for isomer 1
Paste the picture in here
Model made for isomer 1
Fisher projection for isomer 2
Paste the picture in here
Model made for isomer 2
Question 1: Are these two mirror images to each other? Are they enantiomers or diastereomers?
They are mirror images,they are enantiomers since a pair of the group are interchangeable at the chiral Carbon.
Organic Modeling Lab V
2. Draw all four possible stereosiomers in fisher projection for 2,3-dibromobutane
Possible
isomers
Fisher Projection
Isomer 1
C2:R C3:R
Isomer 2
C2:S C3:S
Isomer 3
C2:R C3:S
Isomer 4
C2:S C3:R
Picture for the model you built
Organic Modeling Lab V
Check the models you built above, and answer the following questions:
Question 2: Are isomer 1 and 2 mirror images? Are they superimposable to each other? Are they enantiomers
or diastereomers?
Isomers 1 and 2 are mirror images. They are non-superimposable to each other hence they are
enantiomers.
Question 3: Are isomer 2 and 3 mirror images? Are they superimposable to each other? Are they enantiomers or
diastereomers ?
Isomers 2 and 3 are not mirror images, they are non-superimposable and they are diastereomers.
Question 4: Are isomer 3 and 4 mirror images? Are they superimposable to each other? Are they enantiomers or
diastereomers? Are they identical? What do we call isomer 3 or 4?
Isomers 3 and 4 are mirror images. They are super-imposable hence they are identical. They are called
mesoform
Organic Modeling Lab V
Question 5: How many stereoisomers for 2,3-dibromobutane.
There are 4 stereoisomers in 2,3-di...