Write the IUPAC name of $P h - C H = C H - C H O$ .

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Solution

The priority of the aldehyde group is more than the phenyl group, thus numbering will start from aldehydic carbon.

Therefore the correct IUPAC name of $P h - C H = C H - C H O$ is:

3-phenylprop-2-enal

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{C H}_{3} C H = C H {C H}_{2} C H O

{C H}_{3} - {(C H}_{2})_{5} - C H O

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

(v) (vi) PhCOPh

(C H_{3})_{3} C - C H = C H - C H O

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