Fundamentals of Organic ChemistryChemistryGeneral Organic Chemistry
What is the IUPAC name of the given compound?
Options
- Atrans -N-ethyl-3-pentenamide
- Btrans -1-ethyl-3-pentenamide
- Ctrans -1-ethyl-4-pentenamide
- Dtrans -N-ethyl-4-pentenamide
Correct answer
A. trans -N-ethyl-3-pentenamide
Step-by-step solution
To determine the IUPAC name of the given compound, we follow these steps: 1. Identify the principal functional group: The compound contains an amide group ( -C(=O)NH- ). The suffix for the parent chain will be '-amide'. 2. Identify the longest carbon chain: The longest continuous carbon chain containing the carbonyl carbon has 5 carbon atoms. Thus, the parent alkane is pentane. 3. Number the chain: Numbering starts from the carbonyl carbon to give it the lowest possible locant ( 1 ). - C₁ : Carbonyl carbon ( -C(=O)