1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Conjugate addition problems.

  1. Apr 2, 2012 #1

    lo2

    User Avatar

    1. The problem statement, all variables and given/known data

    http://i43.tinypic.com/nxvw41.jpg

    Ok here it is molecule B.

    http://i39.tinypic.com/333aaro.jpg

    Ok and here it is problem nr. 8, second molecule.


    2. Relevant equations

    No equations needed.

    3. The attempt at a solution

    1)
    So why is it that we do not add any acid here, as far as I know one need acid, in order to do a succesfull carbonlyl or conjugate addition, right? So how come? And because it is LiMe (which is a hard nucleophile) I think it will be a carbonyl addition, so am I right?

    2)
    Well I did not really get that far as I am really not sure how to produce an ether from conjugate addition... So how to?

    Edit: images replaced with links; please don't post large images as they are breaking forum formatting.
     
    Last edited by a moderator: Apr 2, 2012
  2. jcsd
  3. Apr 7, 2012 #2

    chemisttree

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Yes, you are correct. Why can't you draw the initially-formed product (before acid is added)?

    There is a hint in the previous problem. I'm not sure how to do this in one step but it's possible in two.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Conjugate addition problems.
  1. Conjugate bases (Replies: 11)

Loading...