How do I name these structures?

[NguyenDDS]

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Hi everyone,

I need help naming these two structures 🙂

For the left one, I got ----> 2,3,4,5-tetramethyl-2,4-hexadiene
For the right one, I got -----> (z)-2,4-hexadiene

I'm not sure if these are correct and if the left structure has E or Z notation.

Thanks for your help! 🙂

 

[herkulease]

I thought you were done. or are you studying for retake?

1st one is fine.

2nd one I seen it noted before a (z,z)- 2,4 -hexadiene. just 2,4-hexadiene
(2z, 4z) - hexadiene.

if its a class work you might want ask your teacher. My teacher was not a hard stickler on naming she just wanted us to be consistent. She was annoyed so many variations that people get confused.

 

[NguyenDDS]

Thanks a bunch Herkulease! That's very helpful. 🙂
I'm planning to retake my DAT 🙂