The IUPAC Name for the compound
CH3−CH=CH−CH2−C||O−CH2−COOH is
3-Oxo-5-heptenoic acid
There is one double bond and two functional groups:a carboxylic acid group and a ketone group. We need to select the longest carbon chain containing as many of the above their as possible starting from the carboxylic acid.The order of preference is
word root = hept
primary suffix = ene
secondary suffix = oic acid
secondary prefix=3-oxo
Ans ⇒ (c) 3- Oxo - 5 - heptenoic acid
(or)
3 - Oxohept - 5 - en - 1 - oicacid