[lukas.stib]

Hello chemists,

I want to ask you. Can I use phosphoric acid and not sulfuric acid in the synthesis of primary n-bromoalkanes from:
1. KBr and alcohols and 2. HBr and alcohols? Sulfuric acid has the poor property that it can oxidize KBr to bromine, but phosphoric acid not.

I have a lot of alcohols, KBr, hydrobromic acid and phosphoric acid as 85% solution, and it attracts me to use it for n-bromoalkanes.

Thank you very much, Lukáš S.

[chenbeier]

I think so , try it.

[lukas.stib]

OK  I ask you because I saw the use of phosphoric acid in the synthesis of n-iodoalkanes, so I was wondering if it would be possible for n-bromoalkanes.

[rolnor]

I think you can use sulphuric acid, check this out;

https://en.m.wikipedia.org/wiki/1-Bromopropane

[lukas.stib]

Yes, I know sulfuric acid is used, but I was wondering if I could phosphoric acid use. I will try next time ...