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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: peterdotcom on December 06, 2019, 11:43:50 PM

Title: Simple(?) question on nomenclature
Post by: peterdotcom on December 06, 2019, 11:43:50 PM

Is 3-propylheptyne and 3-propyl-1-heptyne the same thing?
If so, can they be used interchangeably? Is there a preference for one over the other?
If not, then how come?

Title: Re: Simple(?) question on nomenclature
Post by: chenbeier on December 07, 2019, 06:01:54 AM

The second one is more accurate. The first one is not clear which isomer is meant.

Title: Re: Simple(?) question on nomenclature
Post by: AWK on December 07, 2019, 02:31:37 PM

All other isomers will be named as octyne with the substituent ethyl at C-5 or C-4. Interesting explicit exception, but of course the second name fully complies with the rules of the nomenclature.