Q.13.63 - An Introduction to General, Organic, and Biological Chemistry

Question

Identify each of the following pairs of Fischer projections as enantiomers or identical compounds: (13.2,13.3)

Step-by-Step Solution

Answer

Part (a) : 

Part (b) 

Part (c) 

Part (d)

Step 1: introduction (Part a)

• Enantiomers are nonoverlayable mirror images of one another, mostly molecules containing asymmetrical carbon atoms.

Step 2: Identify each of the following pairs of Fischer projections as enantiomers or identical compounds: (Part a)

• If there is Chiral C in molecule then the mirror image of the molecule is note identical to each other but enantiomers
• No Chiral C so these mirror images are identical

Step 3: b) Identify each of the following pairs of Fischer projections as enantiomers or identical compounds:

• If there is Chiral C in molecule then the mirror image of the molecule is note identical to each other but enantiomers
• (Chiral C is C which is attached to four different groups)
• Chiral C present so these mirror images are Enantiomers

Step 4: c) Identify each of the following pairs of Fischer projections as enantiomers or identical compounds:

• If a molecule contains Chiral C, the mirror image is not identical to each other, but enantiomers are (Chiral C is C which is attached to four different groups)
• These mirror images are Enantiomers since Chiral C is present.

Step 5: d) Identify each of the following pairs of Fischer projections as enantiomers or identical compounds:

• If there is Chiral C in molecule then the mirror image of the molecule is note identical to each other but enantiomers
• No Chiral C so these mirror images are identical