Double bond geometry – Conjugate addition of peroxide to form epoxides

()

Geometrical isomers of alkenes are different compounds with different physical, chemical and biological properties. They are often hard to separate by chromatography or distillation, so it is important that chemists have methods for making them as single isomers.

Chemical reactions on E- and Z-isomers usually give the same type of product, though often with different stereochemistry. The two geometrical isomers may also react at very different rates. The reaction of the conjugated E- and Z-enones shown below with alkaline hydrogen peroxide gives in each case an epoxide, but with different stereochemistry and at very different rates.
Click the structures below to see how peroxide reacts with E- and Z-enone:

 

T. Hashimoto and K. Maruoka, Chem. Rev., 2007, 107, 5656–5682.

 

 

How useful was this page?

Click on a star to rate it!

Average rating / 5. Vote count:

No votes so far! Be the first to rate this page.

As you found this page useful...

Follow us on social media!

We are sorry that this page was not useful for you!

Let us improve this page!

Tell us how we can improve this page (in your own language if you prefer)? If you would like a response, please include your email address e.g. [email protected]

Provided by the