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NCERT Class XI Chemistry Hydrocarbons Solutions

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Question : 4 of 25
Marks: +1, -0
Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
(i) pent-2-ene
(ii) 3,4-dimethylhept-3-ene
(iii) 2-ethylbut-1-ene
(iv) 1-phenylbut-1-ene
Solution:  
(i) CH3−CH2−HC=CH−CH3\mathrm{CH_3-CH_2-HC=CH-CH_3} →ozonolysis\xrightarrow{\text{ozonolysis}} CH3−CH2−CHOPropanal+CH3CHOEthanal\underset{\text{Propanal}}{\mathrm{CH_3-CH_2-CHO}}+\underset{\text{Ethanal}}{\mathrm{CH_3CHO}}
(ii)
H3C−H2C−H2C−C∣CH3=C∣CH3−CH2−CH3\mathrm{H_3C-H_2C-H_2C-}\underset{\mathrm{CH}_3}{\underset{\vert}{\mathrm{C}}}=\overset{\mathrm{CH}_3}{\overset{\vert}{\mathrm{C}}}\mathrm{-CH_2-CH_3}
→ozonolysis\xrightarrow{\text{ozonolysis}}
H3C−CH2−CH2−C∣CH3=OPentan-2-one+CH3−CH2−C∣CH3=OButan-2-one\underset{\text{Pentan-2-one}}{\mathrm{H_3C-CH_2-CH_2-}\underset{\mathrm{CH}_3}{\underset{\vert}{\mathrm{C}}}\mathrm{=O}}+\underset{\text{Butan-2-one}}{\mathrm{CH_3-CH_2-}\underset{\mathrm{CH}_3}{\underset{\vert}{\mathrm{C}}}\mathrm{=O}}
(iii)
H3C−H2C−C∣C2H5=CH2\mathrm{H_3C-H_2C-}\overset{\mathrm{C_2H_5}}{\overset{\vert}{\mathrm{C}}}\mathrm{=CH_2}
→ozonolysis\xrightarrow{\text{ozonolysis}}
CH2=OMethanal+CH3−CH2−C∣C2H5=OPentan-3-one\underset{\text{Methanal}}{\mathrm{CH_2=O}}+\underset{\text{Pentan-3-one}}{\mathrm{CH_3-CH_2-}\overset{\mathrm{C_2H_5}}{\overset{\vert}{\mathrm{C}}}\mathrm{=O}}
(iv)
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