Nomenclature of Acid Chlorides

Nomenclature of Acid Chloride

Acid Chloride are the derivatives of carboxylic acids which have –COCl group in it.


1.Start numbering from the carbon of –COCl.

2.For naming:  alkane-e+ oyl chloride


In the above compound, five carbon is present.

Thus the name of the compound is- pentane-e + oyl chloride

3.If two -COCl group is present, always keep the -COCl on the two terminals irrespective of the length of the chain.

4.It is named as: Alkanedioyl dichloride

pentanedioyl dichloride
2-propylhexanedioyl dichloride

5.If three -COCl is present, the stem chain holding the -COCl group directly is considered as the parental chain.

6. It is named as : Alkane-x,y,z-tricarbonyl trichloride

Nomenclature of Acid Chlorides
Nomenclature of Acid Chlorides

7.If three -COCl is present but of it is not directly attached to the stem chain. Then the longest chain holding two -COCl in the terminals are chosen as the parental chain. and the 3rd -COCl is named as : chloro oxo alky

Nomenclature of Acid Chlorides

Nomenclature of Acid Chlorides

Try out the following:

Draw the structure of the following

  1. 4-(2-chloro-2-oxoethyl)-3-methylnonanedioyl dichloride
  2. 2,5-dichlorohex-3-enedioyl dichloride
  3. 4,5-bis(2-chloro-2-oxoethyl)octanedioyl dichloride
  4. 4-(2-chloro-2-oxoethyl)-6-(1-chloro-1-oxopropan-2-yl)nonanedioyl dichloride
  5. hepta-2,6-dien-4-yne-1,2,7-tricarbonyl trichloride
  6. 4-(4-chloro-4-oxobutan-2-yl)-5-(2-chloro-2-oxoethyl)octane-1,3,8-tricarbonyl trichloride


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