Organic Textbook pg69

Moderators: Chem_Mod, Chem_Admin

704578485
Posts: 62
Joined: Fri Sep 25, 2015 3:00 am

Organic Textbook pg69

Postby 704578485 » Sat Feb 27, 2016 12:58 pm

In the organic textbook on page 69, the naming of ketones is desctibed. Why on the structure that is labeled as butanone is it not 2butanone? Isnt the functional group part of the 2nd carbon in the chain?

Chem_Mod
Posts: 18880
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 714 times

Re: Organic Textbook pg69

Postby Chem_Mod » Sat Feb 27, 2016 2:28 pm

Yes, but just remember that it will only have one structure in the end. By definition, a ketone must be located inside of the carbon chain. Therefore, it can only be at positions 2 or 3. Since the chain is only four carbons long, 2-butanone is the exact same as 3-butanone. Since there is only one possible structure of 2-butanone, the number is dropped bc it is redundant.

704578485
Posts: 62
Joined: Fri Sep 25, 2015 3:00 am

Re: Organic Textbook pg69

Postby 704578485 » Sat Feb 27, 2016 2:34 pm

If you were to put 2-butanone on an exam would it be marked as incorrect?

Chem_Mod
Posts: 18880
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 714 times

Re: Organic Textbook pg69

Postby Chem_Mod » Sat Feb 27, 2016 2:59 pm

Correct. Either works because it would give the same answer (but yes it is fine :D)


Return to “*Ketones”

Who is online

Users browsing this forum: No registered users and 1 guest