1. Dismiss Notice
  2. Guest, be sure to check out How To Get Into Dental School, our free downloadable PDF with step-by-step details for dental school applicants!
    Dismiss Notice
  3. Dismiss Notice
  4. Download free Tapatalk for iPhone or Tapatalk for Android for your phone and follow the SDN forums with push notifications.
    Dismiss Notice

Syn Anti Addition

Discussion in 'DAT Discussions' started by busupshot83, Apr 21, 2007.

  1. busupshot83

    busupshot83 S.D.N. Vet
    7+ Year Member

    Joined:
    Mar 22, 2003
    Messages:
    2,247
    Likes Received:
    3
    I came across the following alkene halogenation problems:

    alkene + Br2/CCl4 --> bromination via syn addition
    alkene + Cl2/CCl4 --> chlorination via anti addition

    Why do the halogens in each rxn add via different additions (syn and anti)? I was thinking both should be anti.
     
  2. Note: SDN Members do not see this ad.

  3. Lonely Sol

    Lonely Sol cowgoesmoo fan!
    10+ Year Member

    Joined:
    Dec 13, 2005
    Messages:
    684
    Likes Received:
    0
    Status:
    Pre-Dental
    Well wherever you got it from, does it say that Br2/ccl4- syn addition is a major product? If not, then thats correct

    Because, whenever you brominate or chlorinate an alkene, you have will have a mixture of two prodcuts, cis or trans, but one (anti) overpopulates the other (syn). Hope this makes sense!

    But if the book says syn is the major product, then I have to think about it!!
     

Share This Page