Before we can really understand chair conformations, we have to practice drawing them! These tricky little suckers can be hard to get right.
Concept #1: How to draw chairs.
How did you do?
It's ok if you didn't draw it beautifully the first time - practice makes perfect!
Concept #2: How to distinguish cis from trans.
Cis or trans is based on whether the groups are facing the same face (top or bottom) of the ring.
Example #1: Is the following cyclohexane cis or trans?
Example #2: Is the following cyclohexane cis or trans?
Not too bad, right? It's as easy as it sounds! Let's move on.