27.1 amines Flashcards
what is an aliphatic amine?
nitrogen atom is attached to at last one straight or branched carbon chain
what is an aromatic amine?
nitrogen atom is attached to an aromatic ring
draw a primary amine
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draw a secondary amine
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draw a tertiary amine
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how do you name a primary amine with the -NH2 on the end of the carbon chain?
- add -amine to the alkyl chain
how do you name a primary amine with the -NH2 not in the 1st position?
- add amino- to the alkyl group
- add a number to indicate the position
how do you name secondary amines and tertiary amines containing the same alkyl groups?
- add di- or tri-
- add -amine to the alkyl group
how do you name secondary amines and tertiary amines containing 2 or more different groups attached to the nitrogen?
- N to any group attached
- add -amine to the alkyl group
why can amines act as bases?
lone pair of electrons on the nitrogen atom can accept a proton
what is formed when a proton is accepted by an amine?
a dative covalent bond
draw the reaction of ethylamine accepting H+
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what is formed when amines reacts with HCl?
RNH3+Cl-
what is formed when amines react with sulfuric acid?
(RNH3+)2SO4^2-
what allows NH3 to act as a nucleophile?
lone pair of electrons
what are the condition and reagents need to convert a chloroalkane to a primary amine?
ethanol
NH3
why is ethanol used in forming chloroalkane-> primary amine?
prevent any substitution of the chloroalkane by water to produce alcohol
why is excess ammonia used in forming chloroalkane-> primary amine?
reduce further substitution of the amine group to form secondary and tertiary amines
write the 2 reactions for the salt formation and amine formation in preparing primary amines
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write the 2 reactions for the salt formation and amine formation in preparing secondary amines
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write the 2 reactions for the salt formation and amine formation in preparing tertiary amines
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what are the conditions and reagents needed to convert nitrobenzene to phenylamine?
Sn/ conc HCl excess NaOH(aq)
write the equation converting nitrobenzene to phenylamine
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