Prepare Methyl Iodide Using SN2 Mechanism

  • Thread starter Thread starter Mind_It
  • Start date Start date
  • Tags Tags
    Concepts
AI Thread Summary
To prepare methyl iodide using the SN2 mechanism, a methyl halide such as methyl bromide can be reacted with potassium iodide (KI) in an appropriate solvent. Iodide is recognized as the best leaving group, which raises questions about replacing it with another halide. The reaction can be represented as CH3Br + KI → CH3I + KBr, demonstrating the displacement of bromide by iodide. Using an aprotic solvent like DMSO, DMF, or acetone can enhance the reaction efficiency. Understanding the role of the solvent is crucial for successful halide substitution.
Mind_It
Messages
3
Reaction score
0

Homework Statement


Hi folks! :)
I have a problem with the following problem.
Take any methyl halide and prepare methyl iodide.Choose the appropriate solvent.

Now what i know is here we are going by SN2 mech and replacing a halide by iodide ion.But the problem i am facing is how can i replace a other halide by a iodide ion because my book says iodide is the best leaving group among all halides.So i am confused how will this happen. ?
 
Physics news on Phys.org
Yes, iodide is the best leaving group. But the solvent can make the difference. For example, the Kharasch addition in the presence of H2O2 breaks the Markonikov's rule. I'm sorry I don't have the details of this reaction, but will check into it.
 
You can do a displacement reaction with methylbromide:

CH3Br + KI ----> CH3I + KBr

You might want to use an aprotic solvent such as DMSO, DMF or acetone.
 

Thread 'Prove that evolution is constant (Provide at least two arguments to support your position)'

I don't get how to argue it. i can prove: evolution is the ability to adapt, whether it's progression or regression from some point of view, so if evolution is not constant then animal generations couldn`t stay alive for a big amount of time because when climate is changing this generations die. but they dont. so evolution is constant. but its not an argument, right? how to fing arguments when i only prove it.. analytically, i guess it called that (this is indirectly related to biology, im...
View full post »

Similar threads

Explaining the Catalysis of SN2 Reactions by Iodide Ions
Replies
5
Views
15K
Organic Chemistry: Sn1/E1/Sn2/E2/Alchol/Ether Transformations
Replies
3
Views
8K
Chemistry How Does Methyl Orange's Color Intensity Vary on Cotton, Nylon, and Wool?
Replies
1
Views
3K
Which Major Pathway Predominates for This Organic Reaction?
Replies
2
Views
2K
What Is the Maximum Concentration of Iodide Ions for Selective Precipitation?
Replies
2
Views
10K
Organic Chemistry Williamson Synthesis of an Ether
Replies
1
Views
4K
Ochem: H2O & HBr Reactions 2nd Semester Organic Chemistry
Replies
1
Views
5K
N-butyl alcohol and bromide reaction
Replies
1
Views
6K
Why must the hydrogen in E2 reactions be anti- and planar to the leaving group?
Replies
4
Views
4K
Classical What are the best intermediate Newtonian mechanics textbooks?
Replies
23
Views
5K

Hot Threads

Recent Insights

Back
Top