00:01
Assign e or z configuration to the following compounds.
00:07
A.
00:08
First, we need to rank substitutes at the left carbon.
00:15
The first attached atom is carbon, no choice.
00:18
The second heaviest atom is oxygen, here and hydrogen there.
00:25
Oxygen is heavier than hydrogen, which gives the substituting higher priority.
00:31
On the right side, carbon is heavier than hydrogen.
00:36
Which gives this substituent a higher priority.
00:40
So two highest in priority substituents are on the same side of the double bond, and the configuration is z.
00:49
B, on the left side, chlorine is heavier than carbon.
00:54
It has higher priority.
00:56
And on the right side, oxygen is heavier than hydrogen.
01:01
This is the highest priority.
01:03
They are on the same side, configuration is z.
01:08
C.
01:10
Side, the first attached atom is carbon.
01:15
The second heaviest is nitrogen here and carbon there.
01:19
Nitrogen is heavier than carbon.
01:23
This group has higher priority.
01:26
On the right, the first attached atom is carbon...