Question

Duration: 3:
CH3 – CHCI – CH2 - CH, has a chiral centre. Which one of the following represents its R - configuration
(A)
CHs
H-C-CH3
CE
(B)
C2H5
-C- CH3​

Answer 1

Answer:

The answer is a option B

Answer 2

Answer:

answer is in figure...

Explanation:

In order to assign the configuration as R or S:

Identify each of the chirality centers (most commonly an sp3 C with 4 different groups attached)

Then at each chirality center.

Assign the priority (high = 1 to low = 4) to each group attached to the chirality center based on the atomic number.

Reposition the molecule so that the lowest priority group is away from you as if you were looking along the C-(4) σ bond. If you are using a model, grasp the lowest priority group in your fist.

Determine the relative direction of the priority order of the three higher priority groups (1 to 2 to 3)

If this is clockwise then it is the R-stereoisomer

If this is counter-clockwise then it is the S-stereoisomer

Here, The priority order is:$CI>C_2H_5>CH_3>H$