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Introduction To Electrophilic Aromatic Substitution

March 14, 2014 By Leah4sci 15 Comments

electrophilic aromatic substitution introduction tutorialEAS Series: Video 1
The topic of EAS or Electrophilic Aromatic Substitution reactions is one that covers a key reaction pathways studied in the average organic chemistry course.

While the mechanism undergoes a broken pi bond and addition to the former sp2 carbon atom, the EAS reaction is very very different from the Alkene Addition Reactions you've studied back in Orgo 1.

Here's how:

  • Benzene is much less reactive than the alkene's nucleophilic pi bonds
  • EAS requires a super-electrophile which is more positive/unstable compared to the standard electrophile
  • The pi bond and aromaticity is restored in EAS reactions

The video below will give you a quick introduction to the EAS reaction. Also, you will see a comparison to the alkene addition reaction and explanation of the super-electropohile.


(Watch on YouTube: EAS Intro. Click CC on bottom right for transcript.)

–> Watch Next Video: EAS Mechanism and Sigma Complex Resonance

This is Video 1 in the Electrophilic Aromatic Substitution Video Series. Click HERE for the entire series.

Filed Under: Electrophilic Aromatic Substitution Tagged With: EAS, electrophilic aromatic substitution, sigma complex

Comments

  1. Martha says

    May 5, 2018 at 9:25 am

    you are the best !!!!!!!!! i

    Reply
  2. Catherine says

    July 9, 2017 at 6:58 pm

    Damn I love you, you have helped me so much! I am taking orgo 2 right now and you have opened my eyes to all these little tricks which are helping me pick up on things i was struggling with! Thank you so much!

    Reply
  3. Sarika Sivarajan says

    February 28, 2017 at 9:46 am

    Ur the best! You have covered all the topics for my coming orgo exam.. A billion thanks to u!

    Reply
  4. kris says

    August 2, 2016 at 9:53 pm

    you’re a life saver!

    Reply
    • Leah4sci says

      August 22, 2016 at 2:15 pm

      Glad to help!

      Reply
  5. Mjay says

    May 25, 2015 at 1:34 am

    I love you saved my life haha

    Reply
    • Leah4sci says

      May 26, 2015 at 1:16 pm

      Glad to help. are you taking a summer orgo course Mjay?

      Reply
  6. MOLOKO says

    May 21, 2015 at 5:56 am

    you’re making organic chemistry very simple

    Reply
    • Leah4sci says

      May 21, 2015 at 11:59 pm

      glad to know this is helping you. Are you in a summer course or finishing your spring semester?

      Reply
  7. Saran says

    March 25, 2015 at 9:06 am

    This is great thank you a lot

    Reply
    • Leah4sci says

      March 26, 2015 at 10:34 am

      You’re welcome Saran

      Reply
  8. rogieto says

    October 19, 2014 at 6:03 am

    thanks.

    Reply
    • Leah4sci says

      October 19, 2014 at 3:30 pm

      You’re welcome. Which topics are you studying right now?

      Reply
  9. Leah4sci says

    June 30, 2014 at 7:47 am

    Thank you so much for those kind words and I’m really glad I was able to help you get through orgo 1 with confidence. Are you working on a summer Orgo 2 course or preparing for the Fall?

    Reply

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