July 10, 2020, 08:58:25 AM
Forum Rules: Read This Before Posting


Topic: An interesting Reaction  (Read 43282 times)

0 Members and 1 Guest are viewing this topic.

Offline Heory

  • Full Member
  • ****
  • Posts: 175
  • Mole Snacks: +17/-2
An interesting Reaction
« on: November 05, 2009, 08:54:50 PM »
I feel that this board is so desolate. I'd like to share an interesting reaction copied from my textbook as another problem for this week. Does anybody want to have a try?
Provide a complete arrow pushing mechanism for the following reaction.  Predict product.

Offline Mitch

  • General Chemist
  • Administrator
  • Sr. Member
  • *
  • Posts: 5294
  • Mole Snacks: +376/-2
  • Gender: Male
  • "I bring you peace." -Mr. Burns
    • Chemistry Blog
Re: An interesting Reaction
« Reply #1 on: November 05, 2009, 10:03:45 PM »
Is PH=3 triphenylphosphine?
Most Common Suggestions I Make on the Forums.
1. Start by writing a balanced chemical equation.
2. Don't confuse thermodynamic stability with chemical reactivity.
3. Forum Supports LaTex

Offline Heory

  • Full Member
  • ****
  • Posts: 175
  • Mole Snacks: +17/-2
Re: An interesting Reaction
« Reply #2 on: November 05, 2009, 10:57:35 PM »
Is PH=3 triphenylphosphine?

NO. H3O+

Offline csrscience.com

  • Full Member
  • ****
  • Posts: 115
  • Mole Snacks: +11/-6
    • CSR Science
Re: An interesting Reaction
« Reply #3 on: November 05, 2009, 10:59:06 PM »
Oh so the pH is supposed to be  a pH of 3 with the HBr or before hand?
http://www.csrscience.com/
Mushroom Grow Supplies, Laboratory Equipment, Seeds.

Filter Pump Aspirator - Cheap - Humboldt

Click Here to get 10% Discount

Offline Heory

  • Full Member
  • ****
  • Posts: 175
  • Mole Snacks: +17/-2
Re: An interesting Reaction
« Reply #4 on: November 05, 2009, 11:30:34 PM »
H3O+ and PH=3

Offline csrscience.com

  • Full Member
  • ****
  • Posts: 115
  • Mole Snacks: +11/-6
    • CSR Science
Re: An interesting Reaction
« Reply #5 on: November 05, 2009, 11:41:17 PM »
I don't get what you are saying...

Please be more descriptive...
http://www.csrscience.com/
Mushroom Grow Supplies, Laboratory Equipment, Seeds.

Filter Pump Aspirator - Cheap - Humboldt

Click Here to get 10% Discount

Offline Heory

  • Full Member
  • ****
  • Posts: 175
  • Mole Snacks: +17/-2
Re: An interesting Reaction
« Reply #6 on: November 06, 2009, 12:04:07 AM »
Sorry I'm not good at English so I cann't decribe it very well by words.
Well, "1)H2SO4, H2O,PH=3; 2)48%HBr, H2O", understand?

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 25835
  • Mole Snacks: +1690/-401
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: An interesting Reaction
« Reply #7 on: November 06, 2009, 03:25:19 AM »
It is not clear whether PH=3 means pH=3 or is some kind of pseudostructural symbol describing presence of reagent.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info

Offline Heory

  • Full Member
  • ****
  • Posts: 175
  • Mole Snacks: +17/-2
Re: An interesting Reaction
« Reply #8 on: November 06, 2009, 03:33:45 AM »
I didn't think that my question would be so obscure.
PH is hydrogen ion concentration

Offline Ulfsaar

  • Regular Member
  • ***
  • Posts: 26
  • Mole Snacks: +2/-0
Re: An interesting Reaction
« Reply #9 on: November 06, 2009, 04:10:47 AM »
this??

Offline Heory

  • Full Member
  • ****
  • Posts: 175
  • Mole Snacks: +17/-2
Re: An interesting Reaction
« Reply #10 on: November 06, 2009, 04:13:44 AM »
NO

Offline Ulfsaar

  • Regular Member
  • ***
  • Posts: 26
  • Mole Snacks: +2/-0
Re: An interesting Reaction
« Reply #11 on: November 06, 2009, 07:28:33 AM »
This ????

Offline Ulfsaar

  • Regular Member
  • ***
  • Posts: 26
  • Mole Snacks: +2/-0
Re: An interesting Reaction
« Reply #12 on: November 06, 2009, 07:35:48 AM »
The amino attact the epoxide ?then the HBr generate carboncation?and the C=C make an addition?

Offline Ulfsaar

  • Regular Member
  • ***
  • Posts: 26
  • Mole Snacks: +2/-0
Re: An interesting Reaction
« Reply #13 on: November 06, 2009, 07:37:37 AM »
I need some hint!!!!

Offline Ulfsaar

  • Regular Member
  • ***
  • Posts: 26
  • Mole Snacks: +2/-0
Re: An interesting Reaction
« Reply #14 on: November 06, 2009, 07:44:22 AM »
Now This structure in the first step??

Sponsored Links