We will now proceed with building the pyrrolidine group of our Nicotine molecule. In this portion of our molecule, we start with Carbon 4’, then we will continue building it in a clockwise direction. Let’s continue!

• 1

  

  1. First using a carbon atom (Carbon 4’) then attach 2 hydrogen atoms on it using 2 small connectors.

• 2

  

  2. Using a medium connector, attach another carbon atom (Carbon 5’) below Carbon 4’. Afterwards, attach 2 hydrogen atoms on Carbon 5’ using 2 small connectors.

• 3

  

  3. Then, get a nitrogen atom (Nitrogen 1’) and attach this to Carbon 5’ using a medium connector.

• 4

  

  4. Then get a carbon atom and attach it below Nitrogen 1’ using a medium connector.

• 5

  

  5. Place 3 hydrogen atoms on this carbon attached to Nitrogen 1’ using 3 small connectors.

  Note: Joining 3 hydrogen atoms to 1 carbon atom will form a methyl group. This means, we just attached a methyl group on Nitrogen 1’ of our pyrrolidine molecule!

• 6

  

  6. Get another carbon atom (Carbon 2’) then attach this to Nitrogen 1’ using a medium connector.

• 7

  

  7. Using a small connector, attach a hydrogen atom on Carbon 2’. Twist Carbon 2’ in such a way that the hydrogen atom bonded to it faces towards you.

• 8

  

  8. Then, using 1 medium connector, attach another carbon atom (Carbon 3’) on Carbon 2’. Afterwards attach 2 hydrogen atoms on Carbon 3’ using 2 small connectors.

• 9

  

  9. Join Carbons 3’ and 4’ using a medium connector.

• 10

  

  10. Now, this is the fun part: Using a medium connector, join Carbon 3(of the pyridine ring) and Carbon 2’ (of the pyrrolidine ring). As you join these 2, make sure that the rings appear “flat” on the floor, while keeping the hydrogen facing towards you.