00:01
Here we have the reaction that was given to us in the problem.
00:05
We are asked to show a stepwise mechanism, including curved arrows, and to show all intermediates and charges.
00:14
So first thing, i am going to redraw my starting material here.
00:20
I'm going to redraw it just a little bit differently with the oxygen or the hydrogen off to the side.
00:25
I would explicitly show all the electrons on the oxygen.
00:32
Next i'm going to draw our reactant here.
00:37
And this hydrogen is going to have a partial positive charge because of the very strong pull from the bromine.
00:49
So our nucleophilic oxygen will be able to attack our electrophilic hydrogen.
00:57
And the electrons that were in this bond are going to be put up onto the bromine.
01:02
That step is called protonation.
01:09
Now we've made water.
01:13
Water's a great leaving group.
01:14
It's perfectly happy on its own.
01:17
I'm going to color code throughout this reaction.
01:19
That's why we have a blue hydrogen there.
01:22
And now this oxygen has a positive charge.
01:26
It has three bonds.
01:27
It's uncomfortable...