00:01
Let's go ahead and draw the top -down view of trans 1 -3 dimethyl cyclohexane.
00:06
Okay, let's call this carbon 1.
00:09
There's a methyl.
00:10
Let's call this carbon 3 and trans.
00:12
So if the first one was a wedge, then this needs to be a dash.
00:16
Okay, that is trans 1 -3 dimethylyl -cyclohexane.
00:20
Let's look at some chairs.
00:23
This is the first option.
00:26
Okay, we've got a methyl here and a methyl here.
00:29
Are these having a 1 -3 relationship? ship one, two, three, four? nope, that's no good.
00:36
So one is out.
00:40
Let's look at number two.
00:51
Okay, this is a problem for the same reason.
00:53
One, two, three, four.
00:56
Two is also no good.
01:00
Let's look at number three...