Question

How can I convert 3-methylpentane `C_2-C_3` bond from bond line notation to Newman projection?

Answer 1

Step 1. Draw the structure of 3-methylpentane.

Step 2. Convert to a wedge-dash structure at C-2 and C-3.

Step 3. Identify the groups on C-2 and C-3.

The groups on C-2 are CH₃, H, and H. Those on C-3 are CH₃CH₂, CH₃, and H.

Step 4. Draw a template for a Newman projection.

Step 5. Attach the groups to the carbons of your template.

View the molecule from the upper right.

The groups on C-2 go on the front carbon atom. Put a CH₃ group on the bottom. The two H atoms go on the other bonds.

The groups on C-3 go on the back carbon. The bulky CH₂CH₃ group goes on the top, the CH₃ goes on the right, and the H atom goes on the left.