KVPY2019ChemistryGeneral Organic Chemistry
IUPAC name of the following compound is
Options
- A1 -hydroxycyclohex-4-en-3-one
- B1-hydroxycyclohex-3-en-5-one
- C3-hydroxycyclohex-5-en-1-one
- D5 -hydroxycyclohex-2-en-1-one
Correct answer
D. 5 -hydroxycyclohex-2-en-1-one
Step-by-step solution
Principal functional group is ketone. ∴ C 1 is carbonyl carbon atom. Locants for hydroxyl groups and double bonds are 5 and 2 , which are preferred over 3 and 5, since the lower number at first difference (2 compared to 3 ) is preferred. Hence, the IUPAC name of given compound is 5 -hydroxycyclohex-2-en- 1 -one.