Is this 2 diethyl 3 5 ethyl 7 tert butyl 7 propyldecane?

[court811]

....................................CH3

......................................|

.............................CH3 - C – CH3

......................................|

...........................CH3 - CH – CH2 – CH –CH3

......................................................|

....................................................CH2

.......................................................|

............................CH3 – CH2 – CH2 – C – CH2 – CH2 – CH3

.......................................................|

............................................ CH3 – C – CH3

.......................................................|

....................................................CH3

[hypervalent_iodine]

Not quite. You've recognised that the parent chain is 10 carbons, which is correct, but you've muddled up your substituents. There aren't any ethyl groups, for starters. Also, if something has more than one group, you would have to put both numbers in front (e.g. 2,2-diethyl or 2,5-diethyl), not just one. You also would list a group more than once - e.g. you wouldn't say 2,2-diethyl-3,5-ethyl (which is wrong anyway, since the second 'ethyl' should be diethyl since there's 2 of them), you would say 2,2,3,5-tetraethyl.

 

And make sure you remember your syntax (i.e. placement of brackets and commas).

[court811]

Not quite. You've recognised that the parent chain is 10 carbons, which is correct, but you've muddled up your substituents. There aren't any ethyl groups, for starters. Also, if something has more than one group, you would have to put both numbers in front (e.g. 2,2-diethyl or 2,5-diethyl), not just one. You also would list a group more than once - e.g. you wouldn't say 2,2-diethyl-3,5-ethyl (which is wrong anyway, since the second 'ethyl' should be diethyl since there's 2 of them), you would say 2,2,3,5-tetraethyl.

 

And make sure you remember your syntax (i.e. placement of brackets and commas).

 

Thank you! We just started learning these last week and our final is on these and i don't really have a good teacher :/

So is it: 2,2,3,5-tetramethyl, 7-tert-butyl, 7-propyldecane?

[hypervalent_iodine]

Almost.

 

When you're ordering the substituents in the name alphabetically, things like tert or iso aren't considered. In your case, that means the butyl group should come before the methyl group.

 

Also, commas only go in between the numbers. Where you've put a comma after 'tetramethyl' and 'butyl' you should have a dash.

[court811]

Almost.

 

When you're ordering the substituents in the name alphabetically, things like tert or iso aren't considered. In your case, that means the butyl group should come before the methyl group.

 

Also, commas only go in between the numbers. Where you've put a comma after 'tetramethyl' and 'butyl' you should have a dash.

 

7-tert-butyl- 2,2,3,5-tetramethyl- 7-propyldecane?

and im not saying your wrong or anything but i dont think my teacher put the dashes afterwards because in all of my notes they are that way. but it probably dont matter because he never said anything to us about the dashes and commas.

[hypervalent_iodine]

Then your teacher is incorrect.

 

The name is as you've stated it above, although there should be any spaces in it. There are in fact a couple of ways of writing the name, though yours would be the more common.

[court811]

Then your teacher is incorrect.

 

The name is as you've stated it above, although there should be any spaces in it. There are in fact a couple of ways of writing the name, though yours would be the more common.

 

Thank you!

he's just out of college and this was his first year teaching so maybe it was just a mistake and he realized it and just didnt want to tell us he messed up since he's practically the same age as my class lol but we've only wrote them like that and with lines, i dont know what its called though