JEE Main202622 January 2026Evening ShiftChemistryGeneral Organic ChemistryActual
The IUPAC name of the following compound is :
Options
- An-propyl-2-bromo-5-methylheptanoate
- Bn-propyl-1-bromo-4-methylhexanoate
- C2-bromo-5-methylpropanoate
- D2-bromo-5-methylhexylpropanoate
Correct answer
A. n-propyl-2-bromo-5-methylheptanoate
Step-by-step solution
The main functional group is an ester (COO-). The alcohol part is n-propanol, giving an n-propyl ester. For the acid part, identify the longest carbon chain: Starting from the carbonyl carbon (C1): C(=O)-CHBr (C2)-CH₂ (C3)-CH(with two methyls). The isopropyl group represents two methyl branches on C4. The longest continuous chain through the main skeleton and maximizing chain length is 7 carbons, making it a heptanoate. Numbering from the carbonyl: C1-C2(Br)-C3-C4-C5(methyl substituent)-C6-C7. Therefore, the IUPAC