Question

The number of configurational isomers of 2-3 dibromo cinnamic acid is 1,2,3 or 4

Answer 1

Explanation:

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Answer 2

The number of configurational isomers of 2-3 dibromo cinnamic acid is four.

Explanation:

The number of configurational isomers of 2-3 dibromo cinnamic acid is four Its systematic name is  2,3-dibromo-3-phenyl-propanoic acid.

The four stereoisomers are:-

1. 2R,3R DIBROMO 3 PHENYL PROPANOIC ACID
2. 2R,3S  DIBROMO 3 PHENYL PROPANOIC ACID
3. 2S,3R DIBROMO 3 PHENYL PROPANOIC ACID
4. 2S,3S  DIBROMO 3 PHENYL PROPANOIC ACID

They are obtained when we add bromine and hydrogen atom to C2 and C3 on each monomer.

Each is a Newmann projection below were looking down C2 to C3 as per their names.