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Naming alkanes

Posted: Mon Feb 29, 2016 1:23 pm
by JukaKim_1D
When you have dimethylethyl as a substituent and methyl as another substituent on a parent chain, octane, and the numbering can either be 4,5 or 5,4, would you put 4-(1,1-dimethylethyl)-5-methyl-octane or 4-methyl-5-(1,1-dimethylethyl)-octane? When considering the alphabetical order for the dimethylethyl, do you look at the "m" in methyl or "e" in ethyl?

Re: Naming alkanes

Posted: Mon Feb 29, 2016 2:57 pm
by chemgal4L
I think it would be 4,5 giving th slowest number first and then you look at the "m" in dimethylethyl for alphabetical purposes.

Re: Naming alkanes

Posted: Mon Feb 29, 2016 4:14 pm
by Spencer Johnson 1C
The correct answer would be 4-methyl-5-(1,1-dimethylethyl)-octane because methyl comes before methylethyl alphabetically