Question 13.4:-

 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


 (i) Pent-2-ene undergoes ozonolysis as: 

                       CH3-CH=CH2-CH2-CH3+O3Pent-2one                    Ozone     

                                 

                                 Part-2-ene ozonide

                                         Zn+H2OH3C-CHO+CH3-CH2-CHO       (i)                       (ii) 

The IUPAC name of Product (I) is ethanal and Product (II)is propanal.

(ii) 3, 4-Dimethylhept-3-ene undergoes ozonolysis as:

       CH3-CH2-C=C-CH2-CH3+O3                     |     |                     CH3 CH3                                               

                     

C4H2-C3H2-C|2=O+O=C|2-C3H2-C4H2-C5H5                     1CH3              1CH3              

         

The IUPAC name of Product (I)is butan-2-one and Product (II)is Pentan-2-one

(iii) 2-Ethylbut-1-ene undergoes ozonolysis as:

             

The IUPAC name of Product (I)is pentan-3-one and Product (II)is methanal.

(iv) 1-Phenylbut-1-ene undergoes ozonolysis as:

    The IUPAC name of Product (I)is benzaldehyde and Product (II)is                               

                                                                                                 

4.4a

The IUPAC name of Product (I)is benzaldehyde and Product (II)is propanal