Organic Chemistry

How many stereoisomers are possible for each of the following structures? Draw them, and name each by the R-S and E-Z conventions

a) 4-methyl-2,5-heptadiene

b) 1,2,5-trichloro-3-hexene

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  1. This forum does not accommodate drawings.

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  2. You could use S.M.I.L.E.S.
    (Simplified Molecular-Input Line-Entry System)

    4-methyl-2,5-heptadiene has two points of E/Z isomerism--the double bond--and one point for R/S isomerism-the central carbon.

    When both bonds have the same isomerism the central carbon is symmetric.

    When the bonds have different isomerism, the central carbon is chiral.

    That's four stereoisomers.





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