1 Naming

Amines These end in –amine. There is, however, rather confusingly two ways of using this suffix. The exam board tend to use the common version where the name stem ends in -yl propylamine. The IUPAC version of the same chemical is propan-1-amine. (This is used in the same way as naming alcohols) If there is another priority functional group as well as the amine group then propylamine the prefix amino is used. Or propan-1-amine 2-aminopropanoic acid. H3C CH C O O H H2N If the amine is secondary and has two alkyl groups attached to the nitrogen, then each chain is named and the smaller alkyl group is preceded by an –N which plays the same role as a number in positioning a side alkyl chain CH3CH2CH2NHCH3 N-methylpropylamine (common name) N-methylpropan-1-amine (IUPAC name) Diethylamine (common name- does not use N if chains are same length) N-ethylethanamine (IUPAC name does still use N). In the common naming version if the chain lengths are the same an –N is not used CH3CH2CH2 N CH3 CH3 If a tertiary amine similar rules apply, and each alkyl side group is given an N N,N-dimethylpropylamine (common name) N,N-dimethylpropan-1-amine (IUPAC name) If there are two amine groups then it is easiest to use amino prefix N H (CH2 )6 N H H H It could also be named 1,6-diaminohexane