Can the ion bromonium be produced from NBS without HBr?
Posted: Sun Nov 21, 2021 4:07 pm
I'm trying to figure out the mechanism for this reaction
(the product is in the second image
). As far as I understand, it is an electrophilic aromatic substitution, but I don't understand how to get a bromonium ion out of the NBS. I read that the Br in an N-Br bond has a partial positive charge so could the triazole attack it directly? Or do I need to first separate the Br, turn it into a bromonium ion, and then attack that ion with the triazole? If so, does anyone know how to do that? I read that it can be done in the presence of HBr, but this reaction does not include HBr anywhere, so I'm not sure what happens there.
- NBS.png (5.41 KiB) Viewed 1800 times
- 2021-11-21 (1).png (94.24 KiB) Viewed 1800 times