Why is the name 2,2-Dimethyl-6-ethylheptane incorrect?

CH3-C(CH3)2-CH2-CH2-CH2-CH(CH2-CH3)-CH3

longest chain is octane …..and name is 2,2,6-trimethyloctane

see the structure here–
http://www.chemspider.com/Chemical-Structure.45535…

heptane 7 linear carbons in a row…

C-C-C-C-C-C-C
1.2.3.4.5.6.7
then start adding “lettuce off the carbon chains)

add ethyl group on the 6 position
C-C-C-C-C-C(CH2CH3)-C-

2,2-dimethyl— so thats 2 methyl groups one each at 2 carbon
C-C(CH3)2-C-C-C-C(CH2CH3)-C
While numbering it must be done in such a way that you should choose longest continuous chain from end to end as parent chain
So you 6-ethyl becomes 3-methyl if you count from that end and final name is

2,2,6-trimethyloctane

Source(s): study

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