00:07
For the following transformation, identify electron file or nuclear file, provide the mechanism, explain the electron flow, and explain regio and chemo -selectivity preferences.
00:24
First, let's start from the mechanism.
00:26
It will answer all other questions.
00:29
It's an e2 elimination.
00:36
I have drawn this hydrogen explicitly.
00:39
That's the same thing, just the confirmation shown here.
00:42
And sodium hydride, it produces h -minus, which acts as a base.
00:51
It supplies electrons between one hydrogen and another one and forms a bond.
00:59
Those electrons are pushed here, so a new bond is formed, and the bond with hydrogen is broken.
01:09
This bond is formed, so the second product would be h2.
01:17
And finally, this bond breaks and tessellate leaves with the negative charge.
01:27
So the electrons flow from hydride to this oxygen through the whole system...