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Basic IUPAC Organic Nomenclature

Amides

Nomenclature
Formula
3D structure
Functional class name = alkyl alkanamide

Substituent suffix = -amide


  • Functional group is an amide therefore suffix = -amide
  • Hydrocarbon structure is an alkane therefore -an-
  • The longest continuous chain is C4 therefore root = but
butanamide
simple amide

CH3CH2CH2C(=O)NH2
  • Functional group is an amide therefore suffix = -amide
  • Hydrocarbon structure is an alkane therefore -ane
  • The longest continuous chain is C4 therefore root = but
  • The nitrogen substituent is C1 i.e. an N-methyl group

N-methylbutanamide
N-subs amide
CH3CH2CH2C(=O)N(CH3)H
  • Functional group is an amide therefore suffix = -amide
  • Hydrocarbon structure is an alkane therefore -ane
  • The longest continuous chain is C2 therefore root = eth
  • The two nitrogen substituents are C1 i.e. an N-methyl group
  • There are two methyl groups, therefore multiplier = di-

N,N-dimethylethanamide
N,N-disubs amide
CH3C(=O)N(CH3)2



 © Dr. Ian Hunt, 2005, Department of Chemistry, University of Calgary