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QUESTION5Which Fischer projection has an absolute configuration of R?B.C.D.CH2CH3CH2CH3CH CH2CH3CH2-1-BrCH=CH2CH2CH3BrO A. structure AO B. structure BC. structure CD. structure D

Question
QUESTION5
Which Fischer projection has an absolute configuration of R?
B.
C.
D.
CH2CH3
CH2CH3
CH CH2
CH3CH2-1-Br
CH=CH2
CH2CH3
Br
O A. structure A
O B. structure B
C. structure C
D. structure D
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QUESTION5 Which Fischer projection has an absolute configuration of R? B. C. D. CH2CH3 CH2CH3 CH CH2 CH3CH2-1-Br CH=CH2 CH2CH3 Br O A. structure A O B. structure B C. structure C D. structure D

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Step 1

For assigning the absolute configuration, the four atoms or groups attached to chiral center are first assigned a prioirity order. Rules for assigning priority order:

1. Higher the atomic number of the atom attached directly to the chiral center, higher is the priority.

2. If two atoms have the same atomic number, then the next atom is checked, and so on, for assigning the priority order.

3. A double bons is supposed to be made of two single bonds.

Step 2

After assigning the priority order to the groups attached, the three groups are traced in the order 1 to 2 to 3. 

 

Step 3

If the lowest priority group is on the vertical position, then moving 1 to 2 to 3 in cl...

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