4. Is this assignment giving you a headache? Propose a synthesis of ibuprofen from benzene. CO₂H Ibuprofen

POST-LABORATORY QUESTIONS 1. Effective mosquito repellents contain DEET (N,N-diethyl-3-methylbenzamide). If you were to synthesize this compound, with what carboxylic acid and amine would you start? Draw their structures. CH3 DEET O C-N CH₂CH3 CH₂CH3 H3C Metadone 2. Metadone, a narcotic analgesic (shown below as the amine), is dispensed as its hydrochloride salt. Explain the use of the salt rather than the amine. Use the structure shown and convert it to the hydrochloride salt. N-CH3 ogged

2. Provide an explanation for a negative iron(III) test with eugenol.

5. Assign a systemic name for the following compounds. CI