13.10 Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines. (i) (CH3 ) 2CHNH2 (ii) CH3 (CH2 ) 2NH2 (iii) CH3NHCH(CH3 ) 2 (iv) (CH3 ) 3CNH2 (v) C6H5NHCH3 (vi) (CH3CH2 ) 2NCH3 (vii) M–BrC6H4NH2

1 - Methylethanamine The root name is based on the longest chain with the -NH2 attached. The chain is numbered so as to give the amine unit the lowest possible number. The longest chain is ethane chain which is further suffixed with 'amine'. 2 - Propan-1-amine The longest chain here is propane. The naming is such that amine unit should get a the lowest possible number. Propane-1-amine can also be written as 1-propylamine. 3 - N−Methyl-2-methylethanamine The chain is numbered so as to give the amine unit the lowest possible number. The other alkyl group is treated as a substituent, with N as the locant. The N locant is listed before numerical locants. The longest chain is ethane which has a Methyl substituent group. 4 - 2-Methylpropan-2-amine Propane is the longest chain and is joined to the amine group at the 2nd position. Another substituent methyl group is also at the same position. 5 - N−Methylbenzamine or N-methylaniline Aniline is considered as the principle group. The other alkyl group is treated as a substituent, with N as the locant. 6 - N-Ethyl-N-methylethanamine This is a tertiary group of amine. The root name is based on the longest chain with an amine having the lowest possible number. The alkyl groups are treated as substituents with N as the locant. 7 - 3-Bromobenzenamine or 3-bromoaniline Benzene is considered as the principle group. The substituent is bromine which is numbered 3.

13.10 Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.

(i) (CH₃ ) ₂CHNH₂

(ii) CH₃ (CH₂ ) ₂NH₂

(iii) CH₃NHCH(CH₃ ) ₂

(iv) (CH₃ ) ₃CNH₂

(v) C₆H₅NHCH₃

(vi) (CH₃CH₂ ) ₂NCH₃

(vii) M–BrC₆H₄NH₂

63 Views|Posted 8 months ago

Asked by Shiksha User

1 Answer

Sort by:

Answered by

Vishal Baghel | Contributor-Level 10

8 months ago

1 - Methylethanamine

The root name is based on the longest chain with the -NH₂ attached. The chain is numbered so as to give the amine unit the lowest possible number. The longest chain is ethane chain which is further suffixed with 'amine'.

2 - Propan-1-amine

The longest chain here is propane. The nam