Question

Write the IUPAC names of the following ketones and aldehydes. Wherever possible, give
also common names.
(i) CH₃CO(CH₂)₄CH₃ (ii) CH₃CH₂CHBrCH₂CH(CH₃)CHO
(iii) CH₃(CH₂)₅CHO (iv) Ph-CH=CH-CHO

Answer 1

(i) CH₃CO(CH₂)₄CH₃
IUPAC name: Heptan-2-one
Common name: Methyl n-propyl ketone
(ii) CH₃CH₂CHBrCH₂CH(CH₃)CHO
IUPAC name: 4-Bromo-2-methylhaxanal
Common name: (γ-Bromo-α-methyl-caproaldehyde)
(iii) CH₃(CH₂)₅CHO
IUPAC name: Heptanal
(iv) Ph-CH=CH-CHO
IUPAC name: 3-phenylprop-2-enal
Common name: β-Pheynolacrolein

IUPAC name: Cyclopentanecarbaldehyde
(vi)PhCOPh IUPAC name: Diphenylmethanone
Common name: Benzophenone