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Flashcards in Stereoisomers Deck (16):
1

Members of one class of stereoisomers are called _________.

Enantiomers

2

Enantiomers are ______________ mirror image molecules. 

Nonsuperimposable

3

The term ______ is used to describe objects that cannot be superimposed on their mirror image. 

Chiral

4

Superimposable vs. Nonsuperimposable

Superimposable = Identicle

 

Nonsuperimposable = Isomers(enantiomers)

5

What is the criteria for Chirals?

Often, must be surrounded by 4 different atoms. 

 

Tetrahedral

6

Pairs of enantiomers are identical in almost every way.

What ways are they similar in?

Melting point

Boiling point

Solubility

(O)

Reduction

7

How can you determine the number of Stereoisomers?

Chiral Carbons = n

 

2n = # of stereoisomers

 

FYI: As chirals increase, stereoisomers increase

8

Light that has passed through a filter that blocks all light waves except those vibrating in one particular orientation. 

Plane-polarized light

9

One property that can be used to distinguish enantiomers is the difference in how they interact with _____________.

Plane-polarized light

10

One stereoisomer of the drug may have a very different biological effect than its enantiomers. The (+) enantiomers are either more effective drugs or are safer to use than their (-) counterparts. 

 

 

How can having too much (-) have negative effects?

(-)Blindness

 

(-)Contreceptive 

11

Stereoisomers that are not enantiomers are called ___________.

Diastereomers 

12

Isomers:

 

________ isomers have different connectivity of atoms

 

Constitutional Isomers

13

Isomers:

 

__________ are nonsuperimposable, mirror images.

 

Enantiomers

14

Isomers:

 

_________ diastereomers, multiple stereocenters

 

Chiral Diastereomers 

15

Isomers:

 

________ diatereomers, restricted rotation.

 

 

Cis-trans Diastereomers

16

How many chiral carbon atoms does 3-bromo-4-methylhexan have?

 

How many stereoisomers are possible for this molecule?

 

 

 

 

2 chiral carbons

 

22 = 4 stereoisomers