4.6 amines

Question 1

Reactions of amines
how to make amine from halogenoalkane

Answer 1

CH3CH2Br + NH3 -> CH3CH2NH2 + HBR
nh3 in sealed tube to exclude oxygen from reaction(make alcohol instead)

Question 2

Reactions of amines
making amines from nitriles

Answer 2

CH3CN -> CH3CH2NH2
4(H)
LiAlH4

Question 3

Reactions of amines
ethanoylation of amines
aliphatic

Answer 3

CH3NH2 + Ch3C=o-cl

Question 4

reactions of amines
with aromatics
how is layed out?

Answer 4

you put two benzene rings in the answer connect with C-N

Question 5

Are amines basic or acidic?

Answer 5

basic
they accept protons
eg NH3 accepting H+ forming coordinate bond

Question 6

aromatic amines with phenyl amine
2 stage process to make phenyl amine

Answer 6

stage 1:
benzene ring + Hno3 ——-> benzene ring with NO2
conditions: conce h2so4 below 50
stage 2:
benzene ring with NO2 —-> phenyl amine and 2H20
conditions: tin catalyst conc hcl 6(H)

Question 7

Test for amine

Answer 7

HnO2 reaction with cold nitric acid “insitu”
room temp or below 10 degrees

Question 8

formation ohms hno2

Answer 8

nano2 + hcl -> hno2 + nacl

Question 9

what color are azo dyes

Answer 9

red orange yellow

Question 10

reaction to make phenylazophenol

Answer 10

dizonium ion and phenol
benzene ring with N=N - benzene ring OH
ORANGE
reflects orange wavelengths light absorbs the opposite colour on colour wheel

Question 11

Reaction to make phenylazonapthene 2 ol

Answer 11

dizonium ion and napthene 2 ol
benzene ring with N=N connected to two benetzendes with a OH
RES
sudan 1- red food colouring
reflects red wavelengths of light (greatest absorbance)

Question 12

chromophore

Answer 12

structural unit within a molecule that is primarily responsible for absorbance of radiation at a certain wavelength