User guide

Drawing an arrow
Starting with 2-propanone (see "Tutorial 1: Drawing a structure" on page 77), draw the reaction arrow:
1. On the Arrows toolbar, click the third arrow from the left in the top row as shown below:
2. In the document window, click and drag the mouse horizontally to the right of the 2-propanone structure. The arrow
appears.
3. Select the Text tool.
4. Click above the arrow. A text box appears.
5. Type OH and press ESC. Re-align the text box as necessary using a selection tool.
Note: If Show Chemical Warnings is turned on (the default), a red box will appear around the OH label when you
change tools or open another text box indicating an error. Ignore this for now.
Add a charge symbol using the Chemical Symbols tool palette:
1. In the Main Tool toolbar, click the Chemical Symbol tool.
2. Holding the mouse button down, select the circled Circle Minus symbol.
3. Point to the center of the OH label. Move the cursor slightly right or left to select the O.
4. With the oxygen atom selected, drag the charge symbol around the atom to the desired position.
Objects that you add from the Chemical Symbols palette are associated chemically with the structure they are near.
Note that the red valence error warning disappears when you add the minus charge.
Drawing the product
We now create 4-hydroxy-4-methyl-2-pentanone using a copy of the 2-propanone structure. You can also create the
product from scratch but you may find copying another structure more convenient.
ChemBioDraw 13.0
Chapter 7: Advanced drawing techniques 105 of 401