Which of the following represents an E isomer | vedclass

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(B) The $E$ (entgegen) isomer is defined by the Cahn-Ingold-Prelog $(CIP)$ priority rules,where the groups of higher priority are on opposite sides of

Vedclass · Accepted Answer

The structure showing $O_2N-CH=CH-CH_3 > O_2N-CH=CH-H$.

Vedclass · Answer

(B) The $E$ (entgegen) isomer is defined by the Cahn-Ingold-Prelog $(CIP)$ priority rules,where the groups of higher priority are on opposite sides of the double bond.In the structure $O_2N-CH=CH-CH_3$,the nitro group $(-NO_2)$ and the methyl group $(-CH_3)$ are on opposite sides of the double bond.Assigning priorities: On the left carbon,$-NO_2$ has higher priority than $-H$. On the right carbon,$-CH_3$ has higher priority than $-H$.Since the higher priority groups ($-NO_2$ and $-CH_3$) are on opposite sides,this is the $E$ isomer.

Which of the following represents an $E$ isomer?

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