Draw a structural formula for 2,3-dimethylbutanoic acid. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. 8) APVAL CH4 ▼ Sn [F ? ChemDoodle

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### Drawing the Structural Formula for 2,3-Dimethylbutanoic Acid

When creating the structural formula for **2,3-dimethylbutanoic acid**, follow these guidelines:

- **Stereochemistry**: It’s unnecessary to consider stereochemistry.
- **Hydrogen Atoms**: You do not need to explicitly draw hydrogen atoms.

#### Using the ChemDoodle Interface

**ChemDoodle Tool Description:**

1. **Toolbar Options:**
   - Various drawing tools are available including:
     - Bond tools (single, double, triple bonds, etc.)
     - Geometry tools (lines, shapes)
     - Element selectors
     - Undo and redo options
     - Templates for common molecules and structures

2. **Drawing Pad:**
   - The central blank space is where you can create the structural formula.
   - An example molecule (likely methane, CH₄) appears in the pad.

**Procedure to Draw the Structural Formula:**

1. **Structure Identification:**
   - Begin with the backbone of the molecule: "butanoic acid" implies a four-carbon chain with a carboxylic acid group at the end.
   - The "2,3-dimethyl" part indicates that there are two methyl groups attached to the second and third carbons of the butanoic acid chain.

2. **Drawing the Skeleton:**
   - Draw a four-carbon chain.
   - At the end of the fourth carbon, draw the carboxylic acid functional group (COOH).

3. **Adding Methyl Groups:**
   - Attach a methyl group (CH₃) to the second carbon of the main chain.
   - Attach another methyl group (CH₃) to the third carbon of the main chain.

**Resulting Structure:**
```
     CH3
      |
CH3—CH—CH—COOH
      |
     CH3
```

### Summary

Using the ChemDoodle interface, draw a four-carbon chain for butanoic acid, add a carboxylic acid group at the end, and attach two methyl groups to the 2nd and 3rd carbons of the main chain. Remember, this is a representation without stereochemistry and without explicit hydrogen atoms.

By following these steps, you can successfully create the structural formula for **2,3-dimethylbutanoic acid**.
Transcribed Image Text:### Drawing the Structural Formula for 2,3-Dimethylbutanoic Acid When creating the structural formula for **2,3-dimethylbutanoic acid**, follow these guidelines: - **Stereochemistry**: It’s unnecessary to consider stereochemistry. - **Hydrogen Atoms**: You do not need to explicitly draw hydrogen atoms. #### Using the ChemDoodle Interface **ChemDoodle Tool Description:** 1. **Toolbar Options:** - Various drawing tools are available including: - Bond tools (single, double, triple bonds, etc.) - Geometry tools (lines, shapes) - Element selectors - Undo and redo options - Templates for common molecules and structures 2. **Drawing Pad:** - The central blank space is where you can create the structural formula. - An example molecule (likely methane, CH₄) appears in the pad. **Procedure to Draw the Structural Formula:** 1. **Structure Identification:** - Begin with the backbone of the molecule: "butanoic acid" implies a four-carbon chain with a carboxylic acid group at the end. - The "2,3-dimethyl" part indicates that there are two methyl groups attached to the second and third carbons of the butanoic acid chain. 2. **Drawing the Skeleton:** - Draw a four-carbon chain. - At the end of the fourth carbon, draw the carboxylic acid functional group (COOH). 3. **Adding Methyl Groups:** - Attach a methyl group (CH₃) to the second carbon of the main chain. - Attach another methyl group (CH₃) to the third carbon of the main chain. **Resulting Structure:** ``` CH3 | CH3—CH—CH—COOH | CH3 ``` ### Summary Using the ChemDoodle interface, draw a four-carbon chain for butanoic acid, add a carboxylic acid group at the end, and attach two methyl groups to the 2nd and 3rd carbons of the main chain. Remember, this is a representation without stereochemistry and without explicit hydrogen atoms. By following these steps, you can successfully create the structural formula for **2,3-dimethylbutanoic acid**.
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