Organic Chemistry Basics - Result Question 155

####6. The absolute configuration of

(2016 Main)

(a) $(2 S, 3 R)$

(b) $(2 S, 3 S)$

(c) $(2 R, 3 R)$

(d) $(2 R, 3 S)$

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Answer:

Correct Answer: 6. (c)

Solution:

6.

For $C-2$, order of priority of substituents is $OH>CH(Cl)\left(CH _3\right)>COOH$

For $C-3$, order of priority of substituents is $Cl>CH(OH) COOH>CH _3$

Hence, according to CIP rules,



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