Comments on: Alkene Addition Reactions: “Regioselectivity” and “Stereoselectivity” (Syn/Anti)

By: James Ashenhurst

James Ashenhurst — Mon, 01 Jul 2019 21:57:45 +0000

In reply to Felix. It's an equilibrium. It depends on whether you have a high concentration of water relative to your alkene (addition) or whether you are actively sequestering water as it's being formed, taking it out of equilibrium (elimination). Follows Le Chatelier.

By: Felix

Felix — Thu, 31 Aug 2017 16:53:20 +0000

What I dont get is why you can do an elimination reaction of water to get a double bond (catalyzed by H2SO4, E1 mechanism) but you can also get the addition of water to an alkene in acidic conditions. I don’t see how you get 2 different results using the same conditions.

By: Earnest

Earnest — Fri, 25 Jan 2013 13:23:29 +0000

This is awesome!