Unit 4.6 Amines (re-run)

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

Define aliphatic amines?

Back (Answer)

Straight chain

Front (Question)

Define aromatic amines?

Back (Answer)

Ring structures

Front (Question)

Define base? (2/things)

Back (Answer)

• Can accept a proton • /donate a pair of electrons

Front (Question)

Define nucleophile? (2-way)

Back (Answer)

• Electron rich species • with a lone pair to donate

Front (Question)

Define polar?

Back (Answer)

Dipoles with a separation of charge

Front (Question)

Define dative bond? (2-way)

Back (Answer)

• Electron pair in a covalent bond • from only one atom

Front (Question)

Define inductive effect? (2-way)

Back (Answer)

• Movement of e- density • along a σ-bond

Front (Question)

Show me acetyl group? (Whiteboard)

Back (Answer)

R-C(=O)-CH3

Front (Question)

Show me acyl chloride [group]?

Back (Answer)

R-C(=O)-Cl

#10

Front (Question)

Show me ethanoyl chloride?

Back (Answer)

H3C-C(=O)Cl

#11

Front (Question)

Define ethanoylation? (2-way)

Back (Answer)

• Adding on (2 carbon) acyl group • into compound

#12

Front (Question)

Define in situ? (aren’t ya glad?)

Back (Answer)

In the reaction mixture

#13

Front (Question)

Show me diazonium ion? (Whiteboard…)

Back (Answer)

However, a description: Benzene connected to +N≡N

#14

Front (Question)

Define chromophore? (3-way)

Back (Answer)

• An atom/group whose presence is responsible • for the colour of a compound • e.g. R-N=N-R

#15

Front (Question)

Describe amines? (2 things)

Back (Answer)

• Organic compounds • Containing nitrogen derived from ammonia (NH3)

#16

Front (Question)

How are amines generally classified? (2 simple dimples)

Back (Answer)

• Just like alcohols • Primary, secondary, tertiary

#17

Front (Question)

Show me the “formula” for primary amine?

Back (Answer)

R-NH2

#18

Front (Question)

Show me the “formula” for secondary amine?

Back (Answer)

R-(NH)-R1

#19

Front (Question)

Show me the “formula” for tertiary amine?

Back (Answer)

R-NR1R2

#20

Front (Question)

Explain how “simple primary amine”, methylamine, is a polar molecule? H3CNH2 (1 thing + 2-way)

Back (Answer)

• N atom more e- - neg than H atoms • ∴ atom pulls bonded electron pair • towards itself creating dipoles

#21

Front (Question)

How do amines act as weak bases? (2-1-way)

Back (Answer)

• Due to lone pair of electrons • , on nitrogen atom, • being able to accept a proton

#22

Front (Question)

Show how amines are able to accept a proton (weak base), using methylamine, through “eqn” (Whiteboard)

Back (Answer)

Not rlly eqn, it’s got the features of a mechanism… not actually a mechanism

#23

Front (Question)

What determines the strength of the amines? (1 imp, 2-way + 1)

Back (Answer)

• Its ability to accept a proton • Depending on size of σ-charge • …. on amino nitrogen atom • AND availability of the nitrogen lone pair

#24

Front (Question)

We have methylamine and phenylamine…. compare. Explain whether methylamine is the stronger base CH3NH2 (2-way + 1 + 2-way)

Back (Answer)

• Methyl group will donate e--density • … towards the N atom • Increases e--density on N • Makes it easier to donate the…. • e--pair (acts as a base)