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Alkane name

Posted: Tue Mar 07, 2017 11:50 am
by Cindy Flores 2C
What is the name of CH3CH2CH(CH3)CH2CH2CH2CH3?

Re: Alkane name

Posted: Tue Mar 07, 2017 11:51 am
by Nick_Kopooshian_3C
wonderful question. It's 3-methylheptane

Re: Alkane name

Posted: Tue Mar 07, 2017 12:00 pm
by Paul Sedaros 1B
Since there are 7 carbons in a chain (the carbon in the parenthesis is a substituent), we know the chain is a heptane. Now, the substituent only contains one carbon, so therefore it is a methyl group. If we go from right to left, we get 5-methyl-heptane, but from left to right, we get 3-methyl-heptane. Using the rule when there is one substituent, we put the lowest number onto this substituent, so the answer is 3-methyl-heptane.

Re: Alkane name

Posted: Tue Mar 07, 2017 9:33 pm
by Patrick Ricaflanca 2H
I think if you're having trouble identifying the parent chain, you can just count all the C's outside the parentheses, then consider the one in parentheses the subsituent of the adjacent C atom.