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Help me please, The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is

  • Option 1)

    – CONH2 , – CHO, – SO3H , – COOH

  • Option 2)

    – COOH , – SO3H , – CONH2 , – CHO

  • Option 3)

    – SO3H , – COOH , – CONH2 , – CHO

     

  • Option 4)

    – CHO , – COOH ,– SO3H , – CONH2

     

 
Answers (3)
1585 Views
A Aditya

Option 2 is correct

 

N neha

As we learnt in

Seniority Table -

- wherein

Carboxylic acid is the senior most functional group.

 

 The priority order of functional groups are 

– COOH > – SO3H > – CONH2 >– CHO

Correct option is 2.


Option 1)

– CONH2 , – CHO, – SO3H , – COOH

This option is incorrect 

Option 2)

– COOH , – SO3H , – CONH2 , – CHO

This option is correct

Option 3)

– SO3H , – COOH , – CONH2 , – CHO

 

This option is incorrect

Option 4)

– CHO , – COOH ,– SO3H , – CONH2

 

This option is incorrect

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