Organic Chemistry, Analytical Chemistry, Biochemistry, Physical Chemistry, Computational Chemistry, Theoretical Chemistry, High School Chemistry, Colledge Chemistry and University Chemistry Forum.
Share your chemistry ideas, discuss chemical problems, ask for help with scientific chemistry questions, inspire others by your chemistry vision!
Please feel free to start a scientific chemistry discussion here!
Discuss chemistry homework problems with experts!
Ask for help with chemical questions and help others with your chemistry knowledge!
I'm trying to figure out the mechanism for this reaction
NBS.png (5.41 KiB) Viewed 1845 times
(the product is in the second image
2021-11-21 (1).png (94.24 KiB) Viewed 1845 times
). 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.