Photon336
  • Photon336
@Rushwr
Chemistry
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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Photon336
  • Photon336
Going to post some problems
Photon336
  • Photon336
|dw:1443627181530:dw|
Photon336
  • Photon336
is this Sn1/E1/E2/SN2?

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Photon336
  • Photon336
|dw:1443628970316:dw|
Photon336
  • Photon336
|dw:1443629127898:dw| hey @Woodward how do we differentiate between E1/E2 SN1/SN2.. could really use your help here.
Photon336
  • Photon336
@cuanchi are you familiar with this?
Cuanchi
  • Cuanchi
sorry @Photon336 I am not very good at organic reactions
Photon336
  • Photon336
@Cuanchi seeing these reactions by themselves isn't as hard but when asked to identify whether E1/E2 SN1/SN2 it's not quite straightforward.
Cuanchi
  • Cuanchi
@Photon336 I never understood the E1/E2 SN1/SN2 I should read again organic substitutions and RMN, IR spectroscopy
Photon336
  • Photon336
@cuanchi i feel there's a fine line between a base and nucleophile, that's one thing i have problems with especially in these types of questions. also some of the rules for SN2 as well become fuzzy when we deal with like secondary substrates.
Photon336
  • Photon336
if you want to review this stuff again I'll be happy to chime in
Photon336
  • Photon336
@Woodward is amazing at organic but he's not always around
Cuanchi
  • Cuanchi
@Photon336 what book do you follow for organic E1/E2 SN1/SN2?
Photon336
  • Photon336
@Cuanchi a good book i used is called clayden organic chemistry second edition
Cuanchi
  • Cuanchi
@Photon336 grate! I got it, thanks
anonymous
  • anonymous
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anonymous
  • anonymous
heat favors elimination rxns.
Photon336
  • Photon336
@roast_master_says fascinating
Photon336
  • Photon336
any reason why that's the case? or that's just something experimentally observed?
anonymous
  • anonymous
I never said that substitution reaction wouldn't occur. As you slowly increase temperature though, elimnation reaction wins over substitution. this doesn't mean that its going to be 100% substitution or 100% elimination. as you increase temp, more energy is available. thus, the starting material can jump the activation barier better to result in elimination reaction thermodynamically favoirable. the full reaction, elimination begins with one, and results in 3 products (generally). whereas substitution = 2 products gibbs equation tells us there's increase in entropy as a result. the change in gibbs will evntually rule out making elimination more favorable.
anonymous
  • anonymous
as the change in gibb becomes more ngative.

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