Is something an electrophilic addition because of the first step or slowest step?

Moderators: Chem_Mod, Chem_Admin

Michael_Phillipi_1I
Posts: 15
Joined: Wed Sep 21, 2016 2:56 pm

Is something an electrophilic addition because of the first step or slowest step?

Postby Michael_Phillipi_1I » Sun Mar 12, 2017 6:38 pm

In examples when HBr is added and it is an electrophilic addition, it says that because H^+ is an electrophile it is an electrophilic reaction. However, the slower second step involves adding a Br nucleophile. So is it an electrophilic addition because the first step, adding the H^+ is an electrophilic addition is slower, or simply because it is the first step?

Britney Pheng 1L
Posts: 22
Joined: Wed Sep 21, 2016 2:56 pm
Been upvoted: 1 time

Re: Is something an electrophilic addition because of the first step or slowest step?

Postby Britney Pheng 1L » Sun Mar 12, 2017 8:12 pm

Hi Michael!

It is an electrophilic addition reaction because step 1 involves the addition of an electrophile (which in this case is H^+) to the other molecule in the first step. For general electrophilic addition reactions, a pi (double) bond is broken and two sigma (single) bonds are formed. The bonds H-C and Br-C are those two sigma bonds. So basically the name speaks for itself :)


Return to “*Electrophilic Addition”

Who is online

Users browsing this forum: No registered users and 2 guests