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Stereogenic Center Criteria (Are E-Z Stereoisomers Considered Distinct Groups?)

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RH111:
Hi,

From what I understand, for a Carbon atom to be a stereogenic center, it needs to be bonded to 4 distinct groups.  I was wondering whether two stereoisomers (of the E and Z configurations) would be considered distinct groups and make the compound chiral; or if they are considered identical and thus make the compound achiral.

Thanks!

Borek:

--- Quote from: RH111 on April 08, 2021, 03:02:26 AM ---I was wondering whether two stereoisomers (of the E and Z configurations) would be considered distinct
--- End quote ---

Yes.

RH111:
Thanks for your response. In that case how would I assign priority to those groups (the E-Z stereoisomers) to determine the R-S configuration of the molecule?

~RH111

Borek:
Come on, have you even tried?

https://en.wikipedia.org/wiki/Cahn–Ingold–Prelog_priority_rules#Geometric_isomers

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