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Relationships Between Compounds

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Organic Chemistry 1 Textbook > Stereochemistry & Isomers

Stereoisomers IIIb - Optical Isomers

4 Activities

Organic Chemistry 1 Textbook > Stereochemistry & Isomers

Constitutional Isomers

3 Activities

Find out the relationship between the compounds in each pair:

1.

2.

More Stereoisomers IIIb - Optical Isomers Questions:
Optical Isomers
How does plane-polarized light interact with (zero/non-zero):
a chiral molecule
a racemic mixture
Optical isomers: Carbohydrates
Pure β-D-mannopyranose (shown below) has optical activity (specific rotation, α, = -17.0°). In water, the optical activity rapidly changes until after 3 hours α = +14.6°. What is going on? Hint: use pictures to explain.
Stereochemistry
Choose the correct statement:
Finding Relationships between Compounds
Find the relationship between the compounds in each pair:
1.
2.
Optical isomers: Carbohydrates
Pure β-D-mannopyranose (shown below) has optical activity (specific rotation, α, = -17.0°). In water, the optical activity rapidly changes until after 3 hours α = +14.6°. What is going on? Hint: use pictures to explain.
Optical Isomers
Practice: Optical Isomers
How does plane-polarized light interact with (zero/non-zero):
a chiral molecule
Select the Meso compound
What is the relationship between the two molecules below?
What is the relationship between the two molecules below?
What is the relationship between the two molecules below?
What is the relationship between the two molecules below?
What is the relationship between the two molecules below?
Stereoisomers
Draw all stereoisomers of each of the compounds and write the relationships between them:
Stereoisomerism
What is the relationship between the two compounds in each pair:
Optical Rotation
Rank the following three triols in terms of their optical rotation in increasing order (the specific rotation of the reference compound is given):
Relationship
What is the relationship between the two compounds in each pair:
1.
2.
Finding Relationships between Compounds
Find the relationship between the compounds in each pair:
1.
2.
Stereoisomers
Which structure(s) represent(s) diasteromer(s) of I
Optical isomers
Pure β-D-mannopyranose (shown below) has optical activity (specific rotation, α, = -17.0°).
In water, the optical activity rapidly changes until after 3 hours α = +14.6°. What is going on? (Use pictures)
Stereoisomers
What is the relationship between the following compounds
Which of the following is an enantiomer?
Optical Isomers
How does plane-polarized light interact with a chiral molecule? A racemic mixture? A meso compound?
Stereoisomers
Circle all asymmetric centers and label them as R or S
Stereoisomer practice problems
Are the compounds enantiomers (E), diastereomers (D), identical (I) or unrelated (U).
a)
b)
Naming Chiral Compounds
Assign R/S to the following compounds:
Enter answer as (R) (S) (R,R) (S,S), etc or no chiral compounds
Stereoisomers
Assign the isomeric relationship between the following compounds (conformers, enantiomers, diastereomers, constitutional isomers, identical compound):
Stereochemistry
Assign R/S for any asymmetric carbons in the following examples.
Once you have assigned the R/S configuration of an asymmetric carbon, you must then put it together with the name. The R/S assignment acts much like a substituent and is added as a prefix to the chemical’s name. Try naming the first compound and adding the R/S prefix.
Stereoisomers: Optical Isomers
Enantiomers do NOT ever display different …
Which of the following can exist in optically active forms?
Which of the following is a diastereomer of I?
Which of the following is an enantiomer of I?
Which of the following is a meso compound?
Stereoisomers: Optical isomers, Meso compound
Select the Meso compound
Stereoisomers: Optical isomers
What is the relationship between the following compounds
Stereoisomers: Optical isomers
What is the relationship between the following compounds
Stereoisomers: Optical isomers
What is the relationship between the following compounds
Stereoisomers: Optical isomers
What is the relationship between the following compounds
More Constitutional Isomers Questions:
Constitutional isomers
What is the relationship between the following compounds
What is the relationship between the two molecules below?
What is the relationship between the two molecules below?
Isomers
Practice: Chair Conformations
Draw the following molecule in two different chair conformations. Circle the most stable.
Resonance and Isomerism
Are the following structures in each pair resonance structures, constitutional isomers or identical:
1.
2.
Isomerism, Degrees of Unsaturation
How many cyclic ethers are possible having the molecular formula C4H8O?
Which of the following are structural isomers of hexane?
The alkane pentane, C5H12, has several structures (i.e. constitutional isomers, all of which are included in the set of molecules shown below.
Which of the following sets of structures presents the isomers of pentane without counting any isomer more than once?
Constitutional Isomers
The alkane pentane, C5H12, has several structures (i.e. constitutional isomers, all of which are included in the set of molecules shown below.
Which of the following sets of structures presents the isomers of pentane without counting any isomer more than once?
Constitutional Isomers
The compound C3H6Cl2 has how many structural (constitutional) isomers?
Constitutional Isomers
The compound C3H6ClF has how many structural (constitutional) isomers (i.e. NOT counting enantiomers)?
Constitutional Isomers
Consider the structural isomers of hexane shown below.
Which set of structures represents a complete and unique set of all isomers of hexane? (i.e. no duplicate structures)
I and II are:
Constitutional Isomers
Draw each of the following molecules in two different chair conformations. Circle the most stable.
Constitutional isomers
What is the relationship between the following compounds
Constitutional isomers
What is the relationship between the following compounds