November 26, 2024, 05:38:46 PM
Forum Rules: Read This Before Posting


Topic: ETOH  (Read 3510 times)

0 Members and 4 Guests are viewing this topic.

Offline asIlaydiene

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
ETOH
« on: January 24, 2012, 03:54:14 AM »
" Hey  guys, your insight on this problem would help greatly! ETOH and any other needed reagents and solvents, outline a practical synthesis of sodium amide (NaNH2). More than one step may be required. So now if I have this right, this would require an OH to alkyl halide conversion, then using sodium metal in a solution of ether, and finally reacting the resulting  CH3CH2Na with NH3 in an acid-base reaction with hexane as the solvent: (ETOH +PBr3, then Na +ETBr +ETNa+ NH3 +hexane) Is this a reasonable/ accurate solution?”

Offline Dan

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 4716
  • Mole Snacks: +469/-72
  • Gender: Male
  • Organic Chemist
    • My research
Re: ETOH
« Reply #1 on: January 24, 2012, 04:22:42 AM »
Do you have to use ethanol? It is unnecessary.

I would do this and then celebrate with a beer. Not sure that counts though...
My research: Google Scholar and Researchgate

Offline vmelkon

  • Chemist
  • Full Member
  • *
  • Posts: 474
  • Mole Snacks: +28/-10
  • Gender: Male
Re: ETOH
« Reply #2 on: January 25, 2012, 09:26:55 AM »
" Hey  guys, your insight on this problem would help greatly! ETOH and any other needed reagents and solvents, outline a practical synthesis of sodium amide (NaNH2). More than one step may be required. So now if I have this right, this would require an OH to alkyl halide conversion, then using sodium metal in a solution of ether, and finally reacting the resulting  CH3CH2Na with NH3 in an acid-base reaction with hexane as the solvent: (ETOH +PBr3, then Na +ETBr +ETNa+ NH3 +hexane) Is this a reasonable/ accurate solution?”

If you want to make CH3CH2Na, you could just directly react EtOH and Na metal.

Offline Dan

  • Retired Staff
  • Sr. Member
  • *
  • Posts: 4716
  • Mole Snacks: +469/-72
  • Gender: Male
  • Organic Chemist
    • My research
Re: ETOH
« Reply #3 on: January 25, 2012, 09:49:29 AM »
If you want to make CH3CH2Na, you could just directly react EtOH and Na metal.

No you can't. EtOH + Na --> NaOEt + H2, which is CH3CH2ONa, not CH3CH2Na or EtNa
My research: Google Scholar and Researchgate

Offline Honclbrif

  • Chemist
  • Full Member
  • *
  • Posts: 659
  • Mole Snacks: +58/-10
  • Gender: Male
Re: ETOH
« Reply #4 on: January 25, 2012, 12:09:22 PM »
I recall that you can dissolve sodium in liquid ammonia, then a pinch of Fe(III) catalyzes the conversion to sodium amide.
Individual results may vary

Sponsored Links