December 21, 2024, 11:03:57 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: IUPAC name  (Read 1883 times)

0 Members and 1 Guest are viewing this topic.

Offline ve_90

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
IUPAC name
« on: November 08, 2023, 10:57:55 AM »
What's the correct name of this compound?
A) 3-methyl-6-(1-methylethyl)nonane
B) 6-(1-methylethyl)-3-methylnonane

I think the first one is correct but I'm not so sure because I don't remember the IUPAC rules.
Our teacher always calls this substituent "isopropyl".


Logged

Offline Hunter2

  • Sr. Member
  • *****
  • Posts: 2312
  • Mole Snacks: +191/-50
  • Gender: Male
  • Vena Lausa moris pax drux bis totis
Re: IUPAC name
« Reply #1 on: November 08, 2023, 11:13:23 AM »
The first one is correct. Smaller number first and alphabetical  order. But also Isopropyl is still valid.
Logged

Offline ve_90

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
Re: IUPAC name
« Reply #2 on: November 08, 2023, 01:36:58 PM »
Thank you very much. For the same reasons 4-(1-chloroethyl)-2-iodo-3-methyloctane is correct for the following compound?
Logged

Offline Hunter2

  • Sr. Member
  • *****
  • Posts: 2312
  • Mole Snacks: +191/-50
  • Gender: Male
  • Vena Lausa moris pax drux bis totis
Re: IUPAC name
« Reply #3 on: November 08, 2023, 01:42:55 PM »
Yes, I would say so
Logged

Offline rolnor

  • Chemist
  • Sr. Member
  • *
  • Posts: 2308
  • Mole Snacks: +154/-10
Re: IUPAC name
« Reply #4 on: November 08, 2023, 05:09:20 PM »
Isopropyl is not correct I think, isopropanol should be 2-propanol
Logged

Offline Aldebaran

  • Full Member
  • ****
  • Posts: 128
  • Mole Snacks: +7/-1
Re: IUPAC name
« Reply #5 on: November 08, 2023, 05:50:42 PM »
Our UK exam boards prefer propan-2-ol
Logged

Offline Hunter2

  • Sr. Member
  • *****
  • Posts: 2312
  • Mole Snacks: +191/-50
  • Gender: Male
  • Vena Lausa moris pax drux bis totis
Re: IUPAC name
« Reply #6 on: November 08, 2023, 10:57:56 PM »
Logged

Offline rolnor

  • Chemist
  • Sr. Member
  • *
  • Posts: 2308
  • Mole Snacks: +154/-10
Re: IUPAC name
« Reply #7 on: November 09, 2023, 04:17:41 AM »
Valid, not prefered. The deffinition is that its a alkyl chain that is branched, isopropyl is not branched. They accept it because its so common.
« Last Edit: November 09, 2023, 04:55:51 AM by rolnor »
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links