busupshot83

S.D.N. Vet
7+ Year Member
15+ Year Member
Mar 23, 2003
2,247
3
37
Texas
Status (Visible)
Can someone explain why numbering this cyclic ketone (see image attatchment) counter-clockwise (so that the ethyl group has a location number of 2) is correct? Why not number it clockwise (so that the isopropyl group has a location number of 2)?

The name of the compound is 2-ethyl-7-isopropylcycloheptanone. Does the numbering here have to do with ethyl coming before isopropyl alphabetically?
 

Attachments

  • cyclic ketone.bmp
    35.4 KB · Views: 105
This thread is more than 14 years old.

Your message may be considered spam for the following reasons:

  1. Your new thread title is very short, and likely is unhelpful.
  2. Your reply is very short and likely does not add anything to the thread.
  3. Your reply is very long and likely does not add anything to the thread.
  4. It is very likely that it does not need any further discussion and thus bumping it serves no purpose.
  5. Your message is mostly quotes or spoilers.
  6. Your reply has occurred very quickly after a previous reply and likely does not add anything to the thread.
  7. This thread is locked.