00:01
Okay, does this molecule have any chiral carbons? how do we answer this? all we're looking for is carbons that are attached to four unique substituents, right? they also must be sp3, right? so since these are sp2 carbons, they can't be chiral, right? anything in this benzene ring cannot be chiral, basically.
00:22
The nitrogens can't be carbon.
00:24
Okay, there's some more sp2 carbons, right? carbino carbon, nope.
00:29
Alken carbon, nope.
00:31
Okay.
00:32
And then any of the carbons that have two hydrogens coming off of them can't be attached to four unique things, right? so that's no good, for example, which means this is no good.
00:43
Any of these outer carbons, which clearly have two hydrogen sticking off of them, can't be chiral.
00:50
This one as well has a ch2 right there.
00:53
Okay.
00:54
But the rest of these, right, four unique substituents.
01:00
Four unique substituents...