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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: natko on November 23, 2014, 03:26:12 PM

Title: Cycloalkane nomenclature
Post by: natko on November 23, 2014, 03:26:12 PM
Why is  1,6,6-trimethylcyclohexane-1,2-diol not named  2,3,3-trimethylcyclohexane-1,2-diol instead, following IUPAC nomenclature rules?

Isn't 2,3,3 a lower set of numbers than 1,6,6 (if you take the averages of the sets of numbers)?
CC1(C)CCCC(O)C1(C)O
Title: Re: Cycloalkane nomenclature
Post by: cseil on November 23, 2014, 03:33:31 PM
I remember that you have to consider the first number. 1 < 2, so the correct name is 1,6,6 and not 2,3,3.
I am not sure, though.