Naming cyclodienes

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Angela_Pu_3C
Posts: 22
Joined: Fri Jul 15, 2016 3:00 am

Naming cyclodienes

Postby Angela_Pu_3C » Fri Mar 17, 2017 6:34 pm

On pg 29 of intro to orgo, the ex under "unconjugated dienes" reads as "Cyclohex-1,4-diene." However, for self-test 1.11A part B (on the bottom of the same page), the answer reads as "1,6-Dimethylcyclohexa-1,4-diene." Pg 30 continues with ex like "cycloocta-1,5-diene" and "cyclododeca-1,3,5-triene." My question is, is hex or hexa (or oct vs octa, dec vs deca, etc) correct? Or are they interchangeable? Thank you

Stephanie_Younan_3D
Posts: 11
Joined: Sat Jul 09, 2016 3:00 am

Re: Naming cyclodienes

Postby Stephanie_Younan_3D » Fri Mar 17, 2017 6:45 pm

You have to add to add a vowel (a) at the end of hex (hexa) or pent (penta) so that two consonants are not next to each other in the name.


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