Free radical addition

This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

motivated dent

Full Member
10+ Year Member
Joined
Dec 31, 2008
Messages
36
Reaction score
0
On the first achiever test for number 84 it says that a free radical addition is anit and i looked in the orgo book and it's right. but i don't get why the HBr with hv is considered a free radical addition. wouldnt' it be considered a plan irradiation reaction with markovinikov addition? i thought that if the HBr includes a peroxide then it follows the anti addition.

Members don't see this ad.
 
Last edited:
On the first achiever test for number 84 it says that a free radical addition is anit and i looked in the orgo book and it's right. but i don't get why the HBr with hv is considered a free radical addition. wouldnt' it be considered a plan irradiation reaction with markovinikov addition? i thought that if the HBr includes a peroxide then it follows the anti addition.

I have yet to see the Q but any type of peroxide (used basically as a solvent) will form a antimarkovnikov addition, except in the case of HCl and HI. If you added HBr with no peroxide, and heat, you can expect a free radical reaction because the heat will cause the HBr to form a radical. [This is more commonly seen with Br2 or dihalides]. If you post the Q i can be of more help. :)
 
Top