3. Stereochemistry

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Rank the substituents of the asymmetric carbon according to the C.I.P notational system

1. Br 2. COOH 3. CH2OH 4. H

Rank the substituents of the asymmetric carbon according to the C.I.P notational system

1. Br 2. COOH 3. CHO 4. CH3

Rank the substituents of the asymmetric carbon according to the C.I.P notational system

1. Br 2. Cl 3. CH3 4. H

Rank the substituents of the asymmetric carbon according to the C.I.P notational system

1. OH 2. CH2CH3 3. CH3 4. OH

How many optical isomers are possible for lactic acid?

2

What is the possible (maximum) number of stereoisomers for a compound containing n dissimilar asymmetric carbon atoms?

2^n

Which of the following compounds may exist as cis-trans (Z/E) isomers?

But-2-ene

Which of the following shows geometrical (Z/E) isomerism?

CH3CH=CHCH3

What is the relative conformation of the compound shown below?

D

Which of the following compounds is never chiral?

D 1,4-dibromobutane

Stereoisomers that are not mirror images are called:

Diastereomers

What is the relative conformation of the compound shown below?

L

The C.I.P ranking of the substituents can be seen on the projected structure. Determine the absolute configuration

R

What is the absolute configuration of this molecule? (Ranking-manipulation-determination)

R

The C.I.P ranking of the substituents can be seen on the projected structure. Determine the absolute configuration

S

What is the absolute configuration of this molecule? (Ranking-manipulation-determination)

S

Which of the statements is correct about diastereomers?

They are stereoisomers that are not enantiomers

Which of the following is not true of enantiomers?

They have the same specific rotation

Determine whether this compound is chiral or achiral

achrial

meso-Tartaric acid is

always optically inactive

Determine whether this compound is chiral or achiral

chiral

The two compounds shown below are

conformational isomers

The two compounds shown below are

constitutional isomers

The two compounds shown below are

diastereomers

The two compounds shown below are

enantiomers

The two compounds shown below are

identical

Consider (R)- and (S)-butan-2-ol. Which physical property distinguishes the two compounds?

rotation of plane-polarized light

The isomers of a substance must have

same molecular weight

An optically active compound

when in solution rotate the plane of polarized light


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