00:01
So the question is asking us to look at these structures, look at the formation of cordycepen once it is exposed to hydrogen and nickel.
00:15
So what we've done, so this is not cordycepen, but it turns into cordycepen.
00:22
So this is cordycepen.
00:23
And as you can see, the only thing that's changed is actually these two groups.
00:30
So once we treat it with nickel and hydrogen, this hydrogen, so there's two hydrogens.
00:42
And what happens is this sulfur will do a nucleophilic attack on one of these hydrogens and take them.
00:52
And therefore, this group is now satisfied and this group leaves.
00:57
And now forming a positive charge here where the carbon now lacks a hydrogen.
01:05
And so the additional hydrogen then carries electrons and actually binds with the positive carbon charge, and therefore we have this structure.
01:21
Now for our next structure, it's asking us how did the isomer 2 form? so now we want to determine what was the mechanism for isomer 2.
01:33
So we have two chlorine atoms.
01:36
And what's going to happen is this chlorine is actually going to do a substitution...