Question

Draw the structures of the following compounds: (d) 2-methylaziridine (e) N-ethyl-N-methylhexan-3-amine (f) m-chloroaniline

Accepted Answer

To draw the structure of 2-methylaziridine, start by understanding that aziridine is a three-membered cyclic amine (a nitrogen atom in a three-membered ring with two carbons). Add a methyl group (-CH₃) as a substituent on the second carbon of the ring. Ensure the nitrogen has a lone pair of electrons. For N-ethyl-N-methylhexan-3-amine, begin by drawing the main chain, which is hexane (a six-carbon straight chain). Identify the third carbon in the chain and attach an amine group (-NH). Then, attach an ethyl group (-CH₂CH₃) and a methyl group (-CH₃) to the nitrogen atom, as indicated by the 'N-ethyl-N-methyl' prefix. To draw m-chloroaniline, start with the structure of aniline, which is a benzene ring with an amino group (-NH₂) attached to one of the carbons. The 'm-' prefix indicates that the chlorine atom (-Cl) is attached to the carbon meta to the amino group (one carbon away from the amino group on the benzene ring). Ensure that all structures are drawn with correct bond angles and that the valency of each atom is satisfied. For example, nitrogen in amines should have three bonds and a lone pair, while carbon should have four bonds. Double-check the placement of substituents and functional groups to ensure they match the IUPAC naming conventions provided in the problem. Verify that the structures are consistent with the names given.

Draw the structures of the following compounds:
(d) 2-methylaziridine
(e) N-ethyl-N-methylhexan-3-amine
(f) m-chloroaniline

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Key Concepts

Aziridine Structure

Amine Nomenclature

Substituted Aromatic Compounds