Question

Write IUPAC names of the products obtained by the ozonolysis of the following compounds:

1. Pent-2-ene 
2. 3,4-Dimethyl-hept-3-ene 
3. 2-Ethylbut-1-ene
4. 1-Phenylbut-1-ene

Answer 1

IUPAC names of products obtained on ozonolysis:

Ozonolysis cleaves the C=C double bond of an alkene to form carbonyl compounds (aldehydes and/or ketones).

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1. Pent-2-ene
   
   Structure: CH₃–CH = CH–CH₂–CH₃
   
   Products:
   • Ethanal
   • Propanal
2. 3,4-Dimethylhept-3-ene
   
   Products:
   • Butan-2-one
   • Pentan-2-one
3. 2-Ethylbut-1-ene
   
   Products:
   • Methanal
   • Pentan-3-one
4. 1-Phenylbut-1-ene
   
   Products:
   • Benzaldehyde
   • Propanal

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Final Answer (summary):

• Pent-2-ene → Ethanal + Propanal 
• 3,4-Dimethylhept-3-ene → Butan-2-one + Pentan-2-one
• 2-Ethylbut-1-ene → Methanal + Pentan-3-one
• 1-Phenylbut-1-ene → Benzaldehyde + Propanal